But that hasn't really turned out to be the case, has it? 4E fractured D&D fandom, sure, but many people who bought many 3E books have started in again with 4E books. Right? Also, I'm relatively certain that if 4E had been an evolution of 3E -- fixing its problems, introducing some new systems -- I'd still be buying.
I feel for you, Jeff. I began my gaming career with 1e AD&D (I'm 44) and I hated the way 2e developed. I felt very much abandoned by TSR and gave them none of my cash. I was temporarily reenergized by 3.x but, dang, the weight of prep work and the creep of expansions began to rip at my sanity. I stopped buying years ago. And frankly, if the new edition had simply been an evolution of 3.x, I'd be sitting this round out as well. As much as it appealed to me initially, now with a wife, kids, work and precious little free time, I have no interest in following down that road (be it with WotC, Pathfinder, Necro or whoever).
I recognize that it's very subjective, but I honestly feel that it's not that I decided to stop buying WotC products, but rather that WotC decided to stop making products that I want to buy.
And that's absolutely true, as Ben Kenobi would say, from a certain point of view. Conversely, they decided to *start* making products that I'm extremely excited about buying. I have multiple copies of the core books (for myself, my son, my group), a gajillion plastic minis bought off ebay (and I'm aquiver with delight over the new direction the minis are going -- WotC is actually going to see some of my cash, rather than the ebayers), magnetic status markers from Alea Tools, a brand new magnet-friendly battlemat from Dark Platypus, two notebooks full of stuff I've printed out of the Dragon, and I've got cash set aside for two hardcover books coming out next month that can't get here soon enough!
This is all to say, life is cyclical. Gaming is too. WotC's choices have sent you packing for a while... I've been there and it sucks. But it ain't so for everybody. I haven't been this excited about D&D since 3.0 was a baby, and maybe not since AD&D was. I feel like a teenager again, stealing time to flip through my Monster Manual or devouring the latest Dragon. And that means, from my point of view, WotC did the right thing.