I'm not exactly a die-hard of 3E, but I do not intend to DM any games in 3.5 any time soon and the one 3.5 game I currently play in used to be 3.0 until the DM converted. I don't plan to join any other 3.5 games if I can help it, as I do prefer 3.0 (and 2E AD&D, for that matter, but I haven't had a chance to play that in years). I don't own any 3.5 books yet, and won't waste money on them unless I intend to convert to 3.5. I'll switch to 3.5 eventually when I can't find anyone to play 3E or 2E with, though, or when I find there are just too many good 3.5 supplements (yeah right) for me to pass them up and be a 2E/3E grognard. :^) Maybe 4th Edition D&D will be out by then though, and maybe it will actually be done right, so I won't have to bother with 3.5E!
Oh, and yeah, I don't feel 3.5 contributes enough new or fixed stuff to be worth the cost of conversion, especially when it hasn't yet revised all the books I already own for 3E (and I certainly ain't payin' that much money again just for minor revisions, I want true fixes and none of the extra junk). Some changes in 3.5, like with weapons and some spells, are just plain pointless change for the sake of change as far as I can tell, and would require me to backwords-revise that stuff to make it fair and sensible like it already was for the most part in 3E. Sure, some of the revisions are good, but not enough of them are. After all, doesn't Complete Warrior re-print the horribly abusive and redundant Frenzied Berserker, amongst other things, like the new and wierd samurai-like classes/PrCs (if they're gonna update bits and pieces of OA, they could at least do a respectable job of it for those of us who use it, yeesh).