I'm with you. I will almost ALWAYS to see a movie in a theater first if it interests me, otherwise I might try do download it. If it sucks (i.e. Grown Ups 2), I would have neither bought it, nor gone to the theater to see it, no money lost no money gained for either party involved. However when I do go to the theater, I specifically go to the dinner theater, usually with my girlfriend, and order $50 dollars+ worth of food and drinks. I go there for the experience, of the theater; the nice big cushy comfortable reclining chairs with foot rests, and to have somebody wait on me quietly while I enjoy the movie. And I do this quite often, sometimes 2-3 times a month because its fun. I realize this is the theater, not the studios doing this, and getting profits from it, but I assure you I would not be going so much if the theater didn't give me a reason to.
I do my part to support the studios bottom line despite the fact that I haven't purchased a movie on disk for several years. On that note however, if a studio offered a free digital download for a movie after watching it in a theater, say for an extra $5 dollars, even if it I cant download it for a couple months, I would most likely be willing to do that. But, I refuse to pay $20+ dollars for a blueray, just to have it sit around and collect dust. I run all my media off an HTPC and I don't want a bunch of movies taking up space on a shelf somewhere.