If people are born into a situation or simply have had bad luck with who they decided to trust, after enough betrayal you decide that juice of relationships isn't worth the squeeze. I'm pretty much there in my life, I don't seek companionship in AI (nor can I ever imagine doing so) but more than casual friendships and especially romance is not worth the work or the pain.

Embrace the pain. It's a good stimulus to avoid stagnation and improve your situation.