In my game, I have basically ruled out the vast majority of Essentials materials. The reason for it is that the Essentials rules appear to be trying to claw back several of the things that I actually like very much about 4th edition. I like that each class gets encounters, dailys, and at will powers at about the same rate. Finding out that the fighter from essentials is built around making basic melee attacks with modifiers rather then the at will / encounter / daily system was a deal breaker for me.
In any case, this is just a game, and the ultimate goal is to have fun. There is an emerging tradition of edition wars within D&D, so the nerd rage about Essentials you describe should not be that big a shock. Some poeple absolutely love the Essentials rules for exactly the reasons I dislike it. Some people hate 4th edition because it did not ship with Gnomes and it had Dragonborn. Some people are convinced that Arneson and Gygax got it right the first time and wont play anything past the initial D&D rulesets.
Many of us are grown men who essentially sit around pretending to be Elves for several hours. Personally I do not think any of us are in an especially strong position to criticize what other people do for entertainment, especially if the disagreement is as trivial as liking one subset of rules more than another.
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