Is it normal that i never actually miss people?

Unless I have a love interest, I really don't actually feel sad about not being with someone.

I definitely get lonely, and appreciate and love my closest friends to death, but it seems like "missing" people for me is more about lacking someone who can entertain me but I can totally move on and focus more on the people currently around me pretty fast.

Is this normal or is it just that I'm used to adjusting quickly (I've traveled a lot and it's not possible to keep in touch with everyone I meet along the way).