There sure are days when I don't wanna talk to people, be social, or be around people. Honestly, that is how I feel and have felt almost every day of my life. I generally find people annoying and bothersome. Only time I'm around people (Family excluded of course), is when I am forced to (public transport, shops, streets, school in the past, work if I was employed, meetings I have to go, appointments I have to keep, and in the past socializing other kids pestered me into (and a lot of why nots when I said no; for the last 25 years no one has ever been able to pester me into being with them).
And when I've had to be around people, I have never felt a need to comment on things said etc, I just think of what I think of around themes in question if I have thoughts on them, and am content not sharing those thoughts/ opinions. I live in my head.
Never once have I had a day when I actively wanted to communicate, talk, be social (again apart from the 4 individuals that were/are my immediate family)