Look where you're posting. I agree to the extent that I will not replace every one of my DVD's with HD-DVD's - I couldn't afford it and there are many that simply won't get viewed enough or at all. For my favorites, yes, I would replace a few of them with their HD-DVD counterparts, then make new purchases in the new format.
But the special features? I could go either way on those. Many movies I don't even bother with some special features - unless it's one of my more preferred films.
Yes, some people are 100% HD and anything less is unacceptable. And there's nothing wrong with that - to each their own. But I am content over quality - I will watch Pulp Fiction in SD before I would watch Gigli in HD.
But that doesn't mean I don't want to see as much content as possible in an HD format. Hope this helps....