Maybe the HN crew wants DVDs to die. But none of my non-technical family has any problem with DVDs. They work in just about everything. They're easy to lend out. They're easy to find (both in stores and when sitting on a shelf in your house).
For my part, I still prefer DVDs because I actually like owning the disc. But more than that, I have a 25 Mbps FiOS connection and somehow at least once a week when I'm streaming something, Netflix dynamically changes the quality. It's more annoying than skipping due to scratch discs and the quality comes out terribly. I have no idea if Verizon's playing games, but as long as ISPs lose out with streaming media, I wouldn't want to bank on that business.
I'm not looking forward to a world without physical media where content providers and ISPs can dick us around with arbitrary pricing for content.