I was a 2e core guy for a long time, and ran a few 2e campaigns, but never in a pure way. I saw, and still see, it as AD&D rewritten and cleaned up. Pretty much the same rules. Once I discovered the elegance of OD&D, all the fluff and nonsense of the "Advanced" and "modern" got tossed into the "to hell with that crap" pile. I keep the books for reference and the occasional tidbit, but I have no interest in running a 1e or 2e game again, and any adventures I want to run get run as OD&D.
In retrospect, I think I prefer the 2E product model best- Not that all of it was great in execution, but:
TSR gave us lots of setting materials to use or not.
They gave us lots of player tools to use or not.
They gave us lots of DM tools to use or not.
Honestly, while it did produce some gems, I have to disagree - I think the 2E product model was real bad for business. Or really, maybe we should call it the BECMI product model, since it was a few years before 2E in the mid-80's that they really kicked into high gear with the Mystara Gazetteers and Hollow World supplements.
But anyway, publishing a ton of books cost a lot of money for TSR to print them all, and while they never revealed exact sales numbers there's a lot of anecdotal evidence to suggest that most of the supplements didn't sell super well. Incidentally, 3E, 4E, and Vampire: The Masquerade all had similarly aggressive product schedules and suffered similar fates; causing White Wolf to go bankrupt just like TSR did, whereas WotC had enough foresight and cash reserves to put out the next edition while they were still in the black and ride the big wave of PHB, DMG, and MM sales back into profitability. I suspect Paizo also saw the writing on the wall when 5E came out and started work on Pathfinder 2 to go after that same new-edition cash influx.
I think their current 5E strategy is the first time since TSR's first 10 years under Gary Gygax's presidency that D&D has had a financially sustainable product model.
I forgot to add my disclaimer
This is purely from a product "wants" fan standpoint, in no way am I talking financially or from a financial standpoint. No doubt 5E is doing amazingly well financially, and I would never argue that. And the 5E generation are eating it up, but not me.
I prefer being able to have a variety of tools to pick from instead of the feat or famine WOTC model. I don't need yet even more rehashes of previous edition materials and adventures that have been around for decades. The adventure products they produce are mostly railroad mega adventures, poorly done re-hashes of classic adventures that they then stuff into the Forgotten Realms. The Monster books are heavily tied into their IP- For example Mordenkainen's Tome of Foes spends nearly half it's content talking about the IP of Planescape and The Great Wheel and how all the monster lore fits into the cosmos. Volo's Guide to MOnsters spends nearly half its page count going over reams and reams of lore for basic monsters like Goblins, and Mind Flayers then providing a pedestrian lair for each creature with an aesthetically attractive but functionally difficult to use map. I don't want or even need this stuff, it's all been done before. It's just packaged differently than before.
I *AM* looking forward to Theros, but it's not even a D&D setting. It's a M:TG setting.
I really like 5E as a ruleset, but WOTC has produced zilch that makes me want to play it. Even the 3PP material has been pretty lackluster this edition. The 3PP are just jumping on the bandwagon and are not nearly as creative as they were in the prime of the 3.0 boom. Goodman, TLG, Frog God/Necromance have all been really disappointing this go-around. Actually I find I have far more loved and used 4th edition products both WOTC proper and 3rd party on my shelves than for 5th.
I'm fond of some of the supplements. The Ravenloft, Darksun, and Spelljammer settings were pretty good. But I didn't play much 2e, the actual system. They changed just enough to be annoying and not enough to fix the genuine problems in 1st edition.
I wish I'd gotten into Planescape, since only recently started reading some of that material and there is some surprisingly good stuff in it. But that ship is passed, no chance I'll play any of it now.