Originally Posted by Mark Hall
Really, it's the only way I can play the newer editions, and it doesn't work with 3.x/PF... they're different games that share the same name, like football and football (American) and football (Australian rules).
They speak to different audiences, audiences that have always been there (so the "old" and "new" are really misnomers).
To be fair, either set of rules (AD&D, 2e, 0D&D, BECMI vs. 3.x, 4.x, and conceivably 5.x) can be used for either style of play, but really, each of them fits better within their own element. Of course, this is a generalization since even within those two categories, each system is different enough that it goes different places, but generally speaking.