I love how taken I am with my special interests and even plain interests. They always give me something to do or think or daydream about. Left to do what I want, I never experience boredom.
There are so many actually interesting things to watch, read and think explore in my mind, I can't imagine wasting time on doing boring/uninteresting things just to bond with/ spend time with friends as most people do. It sounds like a complete waste to me. My interests come first and unlike some people here, I appreciate my special interests being so important to me.
I like that I am naturally very asocial, which kinda ties in with the first.
Another thing I really like is being able to hyperfocus.
A third thing I like about my personality is that no one can ever talk me into doing anything I truly don't want to. Peer pressure doesn't work on me if I am truly against whatever it is.
Somewhat related, anyone trying to push me into doing something, will find that I am more stubborn than them. I hate pushiness and I love that my personality doesn't allow people to push me around. (Please note, this does not mean not doing what a boss or cop tells me to, or generally being disobedient to parents and teachers when I was a kid.)