I buy a lot less than I used to. No doubt, Netflix has contributed to that. For the cost of one disc, I can watch dozens of movies every month. I don't see myself going back to the days of collecting a lot of discs like I did with DVD, especially for blind buys. There are several reasons:
1) Cost. Let's face it, these discs are expensive. Before BD came out, I used to be able to get day one new releases for $14 - $17 at places like Walmart, who discounted the price in the first week of release. I was motivated to buy a movie sooner rather than later. However, after BD came out, not only did those discs not come with the first week discount, but the DVD discounts dried up, as well. Some new BD releases are 50% more than the cost of the DVD at full price. I can't afford to buy them like I used to buy DVDs, many of which I got for $5-$8 on catalog titles.
2) Quality. With the number of DNR jobs and revisionist color palettes on some of these "new tranfers", I simply can't bring myself to spend good money on many of them. I have no faither I'm gaining anything other than occassional increased picture quality. In other words, if they aren't going to spend the money and give me the best version of the movie, I'm not going to give them the money they're charging for it.
3) A lot of movies simply aren't worth owning. I've bought a lot of movies that I really didn't need to buy years ago. Some of those sit on the shelf never to be watched again. When I switched to BD, I decided I would only buy movies I knew I would watch now and then. Repeat viewing movies only for me.
4) I've already bought a lot of my favorite movies. While I intend to replace some of them on BD, most of them are just as enjoyable on DVD as they would be on BD. Further, I bought a lot of special editions with tons of special features and most of those discs look quite good, even with less resolution. Some simply aren't worth the upgrade, especially to pay more for a bare bones release.
The net result of this is, I buy less.
The studios simply haven't made it worth it for me to go all in on BD.