I started playing and DMing D&D in 1974. I've played each edition as they came out. I played and DM'd AD&D (1st edition), 2nd Edition AD&D, 3rd Edition D&D and 3.5. I played Basic D&D as well, but never DM'd it. Each edition polished the game. Added to it. But it was recognizably the same game. I never had any great problems adopting my home brew campaign to each new edition. Then came 4E. It didn't seem like the same game. Adapting my campaign would basically mean trashing it out and rebuilding it from the ground up. It seems, to me, that they didn't just make changes to improve the game... they made changes just for the sake of change. To reduce backwards compatibility... or maybe just put their own brand on the name. It might be an OK game, but it's not the same game. I think that's the real problem. people expected some changes / improvements... and they got a different game. If they had hung a different name on it I doubt gamers would have been that upset. It does seen to be oriented towards the "short attention span" crowd. Seems to have deified "balance" in character classes as well, although I'm sure time and splat books will change that. Still, just not my game. I'm moving my game over to Pathfinder. 3.5 with some evolutionary change designed to add to and improve the game. Not just to change it. ymmv.