All of the copy protection nonsense the industry was doing with blu-ray really sours the customer experience. When a movie comes in from netflix I want it to just play. I don't want to perform a firmware or software update, I don't want to have to rip it to break the encryption (which most consumers aren't tech savvy enough to do anyway). Meanwhile I have a cheap multiregion DVD player and on my computer I have about 10 different programs that play DVDs pretty reliably.
A well mastered DVD looks pretty spectacular on my 27" 720P device, and while some BluRays do look even better, you need a larger 1080 device to really see a benefit from the higher resolutions.
I have 6 computers, and a dvd player that can play DVDs, but only 1 computer than can play BluRay, so there is a big convenience factor,
When I first bought my BluRay player I signed up for Netflix BluRay. Over time I realized that most of my titles were DVD only, and I was watching a lot on streaming, so I cancelled the BluRay option.