I don't mind streaming, but I use it mainly for tv show fixes. I don't really prowl it for movies.
I also do buy multiple copies of a film, so that racks it up. I mainly do it as a collector since a 20 dollar movie does the same for me as a 400 dollar premium format. As for watching em? I do here and there. I would I have somewhere around 50 movies that I haven't seen yet, but I do plan to.
I also link my imdb account to my phone and try to watch movies as they come out, but I also don't get a chance. Since my theatre is 11 bucks per ticket, I just dish out the extra cash and just own the movie. I have everyone on my family linked onto my vudu, so they end up watching it and I feel I got my money's worth.
I have never gotten to see much of oldies, but I do have a few that I collect mainly for nostalgia. My dad always was watching action films, so I pretty much got every single one that we would watch. A few I have for memory sake, like of a buddy or a point in my life.
Lot of reasons to be honest.