The gaming experience I associate with classic D&D is one of frustration and disappointment punctuated with occasional moments of wonder - the latter possible only because I was relatively young, and the former tolerable only only because I was very enthusiastic and hadn't yet experienced anything better. I'm a different person with different experiences, now, and those early experiences can't be duplicated. I can enjoy a pang of nostalgia when they're alluded to, but that's not enough, for me, to base a campaign on, nor a good enough reason to buy a new edition. It might be worth playing a 1e AD&D game at a convention, for instance.