I/we still play 1e. Saw no advantages to 2e. 3e & 3.5e too complex/fiddly and part of a process where more stuff was moving from DMs control to the printed rulebooks (and there were enough of them in 1e). 4e seems to be an acceptance of the over-complexity of 3.5 but keeps the rulebook control and has removed a lot of interest as well as the complexity. 1e for all its faults was a good enough basis for DMs' creativeness and group RPGing and without lots of time being taken up with combat; a lot of interest was in the group and in the campaign. It may well be that 4e is the last throw of WotC's dice; too many previous versions, books, modules still being used; too many alternative Games/Rules for those who like their RPG differently biased.