As for the nostalgia thing, well, I do think that's a factor.
I'm sorry if I misread part of your post. It's when you go off on this "nostalgia" BS that I get so p!ssed I can't even see straight.
It's an insult, and a false statement as well. I was barely dry from my career as a fetus when my favorite edition of D&D came out. I was 2 when Empire of the Petal Throne came out. I never played those editions when I started gaming. So how can I have nostalgia for something that I didn't even try until I was in my 30s?
I quit 3.0 & 3.5, even though I played in several campaigns and also ran a campaign, because I think it is not a very good game. I spent a lot of time looking into the matter, and I have concluded that OD&D '74 is the best version of the game. There's no nostalgia involved in that. I tried 4E for several sessions and I thought it sucked. There's no nostalgia involved in that either... I was just bored to tears.
"Nostalgia" is a word that people use to dismiss Old School gaming because they're offended that somebody doesn't like the latest Venti Decaf D&D with Whipped Cream put out by WOTC. Well, learn to live with the fact that I tried it and I don't like it. Man up and move on and quit cryin'.
You like 4E? More power to you... play it and have fun. I hope you have so much fun with it that you're glad to be alive and every second feels like you're running through a meadow of flowers with Scarlett Johansson at your side. But don't arrogantly dismiss my appreciation for a different system. This is what I don't get about 4E fans... they act like planet Earth will EXPLODE if someone, somewhere, doesn't have an orgasm every time 4E is mentioned. It's just a stupid nerd game, just like my favorite game is also a stupid nerd game. So how about I don't insult your intelligence for liking your stupid nerd game, and you don't insult my intelligence for liking my stupid nerd game? I don't throw around the term "4on", so why don't you lay off on the "nostalgia" crap?