It's the whole experience. The huge screen. The sound. The seats. The memories of going there as a teenager on a date. Watching a movie together with 200 other people. Zero distractions.
I hate going to a regular movie theatre. They are huge, crowded, you have to get there early to get a good seat, the chairs are uncomfortable, etc.
On the other hand, I love going to higher end movie theatres that aren't large, you get to pick and reserve your seats online, they have reclining chairs and one of the theatres I go to serves food while you watch.
On the other hand, I love going to higher end movie theatres that aren't large, you get to pick and reserve your seats online, they have reclining chairs and one of the theatres I go to serves food while you watch.