I am one of the few who is perfectly fine with 720p and don't really care about 1080p 
I think the jump to 720p is far more impressive than the jump to 1080p since we hit the point of diminishing returns. But other people will disagree with me. It's all good.
But keeping the DVDs, at this point, would be like still making the VHS versions. It's a dead technology that has largely been replaced. No one is demanding they make VHS, Laserdic or even Beta copies anymore. So why keep making DVD?

I think the jump to 720p is far more impressive than the jump to 1080p since we hit the point of diminishing returns. But other people will disagree with me. It's all good.
But keeping the DVDs, at this point, would be like still making the VHS versions. It's a dead technology that has largely been replaced. No one is demanding they make VHS, Laserdic or even Beta copies anymore. So why keep making DVD?