I have always enjoyed going by myself, since I was maybe 14 or so, and I have ever since. I saw about 40 movies last year by myself, I like the solitude and the reflection, the movie theater is one of the places I feel centered, whether the indie place, or the luxury one. I also don't really care to go with someone who isn't as interested as I am, afterwards I will want to discuss and analyze, and most people, just don't do that. They just say "Oh, that was good", and take out their phone. I have no use for that.
I think it's more weird to go with someone for no reason other than not wanting to be by yourself. I saw Tag last week, and these tacky people in front of me, were doing the whole "big date night" with a bottle of champagne, and ordering all kinds of food, on like a Monday. I thought they looked ridiculous. But, I promise they walked out of that movie, and not a word was said about it.
Every once in awhile I'll get an invite from a woman, mostly, that I will accept, or I will ask someone. Book Club lol was one.