What's the point of trying to repair broken relationships? Seriously, give me a reason?

Whats the point of trying to repair broken relationships? Seriously, give me a reason?
I mean, why should I bother?
Family completely wrecked, a friend, a mother and a fiancée that I don't even know if I should love or hate.
I know they see me as a stupid, neurotic dwarf. Why with all jokes played on me by Nature, should I even try to fit or be happy in the world of other humans?
They'd be just happy if I were gone.
Look how serene they are without me. My mother blocked my number, my fiancée is out at work or doing heavens know what.

Random photo so at least you got something pleasant to look at.
Updates:
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Side question, does my behaviors sounds like those of an emotional abuser?
What's the point of trying to repair broken relationships? Seriously, give me a reason?
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