Some of y'all are tripping. You will still never be able to replicate the theater-going experience...and even annoying teenagers or 20-somethings are part of the experience. The reactions from strangers during scenes trumps the reaction from your friends/family at home.
If you can't go 2-3 hrs without using the bathroom...and you don't have to buy popcorn, snacks or drinks their. Hell, worst case, bring your own....but I never eat at the movies.
Then the dollar movies for the classics are hella fun as well. Hell, I'm going to Blobfest next month and I've seen The Blob hundreds of times...but the experience (costumes, run out reinactment, B-movies galore) and the double feature in the retro theater.