I've rarely gone to theaters in decades but I have close friends who I was in the school film group with who are pretty adamant about how they prefer to watch a movie in a theater with other people.

It's also a (relatively) cheap and low friction option for a date, going out with friends, etc.

I honestly did wonder if the pandemic would permanently shift movie theater going as a behavior but the box office results suggest not--and that's with things not yet back to normal in much of the US.