Serious question: How do I stop seeing people other than my family as objects or vehicles to further my own goals?

I am serious, I have a very hard time making friends or long lasting relationships because I cannot see others as anything more than ephemeral entities that I will never see again. By that I mean, I feel little motivation or have a hard time making sense of why I should bother talking to others, greeting them, or even looking at them. Every time someone tries to strike a conversation with me, it all feels so....fake; I simply cannot shake off that feeling that the other person is exaggerating their emotions and investing false interest into me. Nothing feels real.