Everything I've heard about the design philosphy behind 4e, as well as the few bits of crunch has me excited that the game will be much smoother to run -- and therefore more fun to play.
The group I play with has some people with a bad habit(IMO) of needing to follow the RAW to the letter, which includes stopping to look everything up if they don't know it, and don't even know what book its in. It's not everyone in my group, but its enough that whenever we're playing, we have one person like that. At the same time, we have some other players who DM that simply throw rules out there that aren't logical within the way the system works, and aren't consistent about them.
If 4e fixes this problem by making it so you can logically guess how something would work
within the rules of the game, and encourages flexibility in rules on the fly, play can be immensly sped up and made more enjoyable for my group.
If this happens, I don't see myself ever necessarily
wanting to play 3.5 over it, but I doubt I'd be adverse to it.
I certainly don't have an interest in running 3.5. I've tried a few small games, and at this point in my life with school I just don't have the time needed to prepare 3.5. I do like running a game, so I hope the promise of severely cut down prep time for the DM is delivered so I can run something. If all else fails, I can always continue working on ideas and have something amazing to run when after I graduate.
