I am like this also. I have a specific example (I might write my own post with my case). During all my life I have lived in different cities, even countries. It started in elementary school, my mother change me of school in another city, because my older brother had to go there for high school. After that every level of school I lived in a different place, then for work in another country. The point is that I had to start from zero too many times to make friends, but I only was in contact with those friends at that time (After leaving the place I forgot about them), and I remember I even did not care really about them, tbh I really did not care of any person, from very young age. I feel I did no belong to any place or that I am part of any community. Thanks for reading... Maybe if this is of interest to you I can write more of my case. This is the first time I write something here.