Alta above pointed out that the point of life isn't really friendship, it's becoming like God. I'll take that as a starting premise and try to expand on it.
Here are a list of propositions I'll consider established, along with the one Alta gave us:
- The point of life is becoming like God.
- He that loveth not knoweth not God; for God is love. (1 John 4:8)
- Love is a feeling of deep devotion, concern, and affection. Love for God and fellow men is a characteristic of disciples of Jesus Christ (see Matthew 22:35–40; John 13:34–35; 2 Nephi 31:20). We manifest our love for Heavenly Father by keeping His commandments and serving His children. Our expressions of love for others may include being kind to them, listening to them, mourning with them, comforting them, serving them, praying for them, sharing the gospel with them, and being their friend. (True to the Faith)
So, it's pretty clear that love is definitely critical. Where I think the struggle here is is that sometimes we equate love with friendship. Because friendship involves love, we assume that if friendship isn't working out right now, love must not be present. Fortunately, that's not true.
Consider a parent of a teenager who's going through a rebellious time. the parent mourns the child's poor decisions. The parent lovingly chastens the teenager by taking steps the teenager hates (putting parental restrictions on a phone when the teenager starts staying up too late or using inappropriate media, taking away car privileges after the teenager attends a party where alcohol was present in violation of family rules, refusing to allow friends over before homework is done for classes where the teenager isn't passing, etc.) The teenager is not, at this point, "friends" with their parent. Many teenagers in this position will react to these parental actions with declarations about how the parents are "ruining their life" or "don't understand." So, friendship in some senses might be lacking. Love, on the other hand, is the motivation for the parents' actions.
Consider likewise a roommate you just don't have a ton in common with. You are kind to them, and you serve them when they forget to do their own dishes or need to borrow your milk, but you never really hang out and don't consider yourself to be particularly close friends. Well, you can still be showing love.
So, that's kind of the first element here: if friendship doesn't seem to be working out right now, are you necessarily living a purposeless life? Nope. Your life may still have love in many ways, and friendships may be enduring a more difficult period (even a long one.)
Accepting that possibility, let's move on to address some of your other concerns.
What's the point of life if friendship is hard? Friendship is what's supposed to help you get through things when you're single and/or struggling.If connecting to your friends is difficult, or you struggle to be as close with them as they are to each other, or if you struggle to be happy for them when things go right for them, then what's the point?
If your close friendships don't provide the sense of belonging and being needed that you desire, then what's the point of life?
If I can't succeed at friendship, I'll probably fail at marriage (which sucks anyway) so it's not like I can count on that to bail me out.
And besides, marriage isn't going to magically provide one person who somehow manages to perfectly fulfill all of my emotional needs.
If marriage, family, and friendship aren't great, what's the point of it all?
Wasn't love supposed to be the point?
I see a few problems in here. Obviously, I don't know your situation, so it's totally possible that I'm misreading here. Please don't take offense if I identify from your short question problems you don't actually have. Here are some potential issues that I see. I'm going to try to use them to consolidate your questions into themes that are a bit easier for me to discuss.
1) Why should someone maintain friendships if friendships are practically difficult to maintain?
2) Why should someone use friendship to meet their personal needs if friendships cannot fully meet those needs?
To me, these narrow down into one overall thematic question:
What purposes is friendship supposed to serve?
I'm going to comment on that and hope that as we discuss it, we can work in answers to the more specific questions above.
Answer to Root Question:
I'm not a human relations specialist or a philosopher or anyone else particularly qualified to examine the overall meaning of friendship. However, here's what I'd propose: The purpose of friendship is to help us recognize, receive, and give love. We know from the above True to the Faith quotation that it's important for us to learn to give love, and that many of the ways we do that are often manifest in friendships (although we show them elsewhere too.) Likewise, in order for us to understand love (including the love of God for us that led to the Plan of Happiness and the love of our Savior that led him to atone for us), we need practice feeling it. We feel love in many ways. One way for us to feel love is friendship. As we give and receive love in friendships, we learn to better understand what love is and how to live in a loving way.
I think the answers to the other questions come from this: we keep trying for friendship because apart from having some of our needs met, we can also have a chance to learn and to help meet the needs of others (and to help them learn.) None of these things are going to work perfectly all the time, but even when one of them isn't working, we can still be trying for the others. This fits in with the overall plan of the Gospel: we can learn from, help, and receive help from all of our brothers and sisters, but ultimately the only One who can meet all of our needs is our Savior. He is one who will never abandon his relationship with us and who will always be there with us.
I echo the writers above: I'm sorry you're struggling, and I hope you can find hope in the love that is available in this world. It's not always available in the same ways, the same times, or from the same people, but we do have access to love, and that is a beautiful help to us as we grow. If you need people to talk to, especially during the time when it's harder to feel the love, feel free to email us.