Sorry if it came over that way - my intent was actually more nuanced.
The irony is that I originally drifted away from D&D because I didn't think it was "realistic" enough, but then became enthused with it again because the new edition specifically eschewed "realism". I think the real issue with the earlier editions was that I had missed the point - missed what was actually good about them. Admittedly, many others seem to have focussed on just the "realism" aspects that I thought were covered better elsewhere, but that's not really any sort of excuse for me having missed what D&D was actually good at. Just because 300 people say 1+1=3 doesn't mean arithmetic has suddenly changed - it just means 300 people (including, in this case, me) were wrong.
Do I think 4E does the hp-class-level deal better than older editions? Yes, I do, but that's a taste thing, and not something everyone needs to - or even ought to - share. There's even a strain of taste that desires class and level mixed with some level of "realism" and accepts that mixing the two will involve some level of compromise - again, not a taste I share, but a perfectly valid one.
My post was intended really as a (nostalgic) reflection on the follies of fixating on one specific thing that makes roleplaying "good", and how it leads the mind astray. After over 35 years of play, it's clear to me that no version of D&D was a "bad game" because it "wasn't realistic" - something my 20-something self would have taken as an article of faith. I have a clear idea of what games work well for me and why, nowadays, but I don't imagine that there is any game that doesn't work well for *somebody* - and thus there is no such thing as an unambiguously bad game. Just ones that are not to my (or others') taste.