Anyone else just not care about other humans?

Whenever someone is depressed, people ask them to think of reasons to live. At the top of the list is invariably “friends/family”. I personally don’t care about this. To me, it’s like saying “the road” or “a piece of dust”. I just feel completely apathetic towards it.

Don’t get me wrong, I have liked people, mostly historical figures. I like reading about what they think of the world and have to say. I can absolutely fall in love (platonically) with the minds of some people. I like to discuss art or culture with people. However, the moment things turn “chummy” and they want to know me personally, I want to stop talking to them.

I don’t have family any more but when I did I never missed them when away from them. They were fine, I liked their company, but it’s as if I can’t form deep emotional connections in my heart.

I feel alone. Everything revolves around family and other people. People always put others on a pedestal and neglect themselves. I reject this and cannot connect with it.

Is this normal? I am suspected to be high-functioning autistic/Asperger’s. I am gay and still desire companionship but maybe I’m a bit asexual or something? (Is that the right term?)

Advice welcome.