Ruin Explorer
Legend
So D&D should just be a good little sheep and step in line, then, I guess.
I'll amend the question: "Why is there this conception that if 'the staggering majority of RPGs' are doing something it's something the D&D should be/has to do?
I don't think anyone is saying "has to", and the "little sheep" comment is pretty hilariously inappropriate (this isn't a "macho" or "fight the man" issue).
The point is very simple - putting everything in one book, rules-wise, has been a very successful model. That's why people think it should be done. It sells more copies of that book, it means the group can play with just one book (though they usually won't), and it generally makes everyone's life quite a lot easier.
The only reasons I can see not to do it are:
1) If you can convince people to buy three books instead of one, why wouldn't you?
(Of course the issue is that, in practice, the MM and DMG will typically sell only about as third as many copies as the PHB or less - where a more expensive "everything" book will sell a number closer to the PHB).
2) Generally it allows better production values (i.e. more art, more space, more everything).
D&D can get away with not doing it. That doesn't mean D&D shouldn't be doing it. It obviously doesn't mean it "has to", either.
Well, I believe 3e and 4e shoots the question of complexity out of the water. But regardless of that, as the originator of the whole RPG industry, I think I'll just continue to believe that D&D has the right (if not obligation) to remain an "outlier."
It has the "right" to do it. That doesn't mean it's smart to do it.
Oh sure. I'll buy whatever they put out...just to have and be able to peruse, even if I never get a chance to actually play it. But I still believe the idea of a product called D&D with the DMG as an optional tool to play the game is completely foreign and utter madness.
It's like going to eat at a fancy steak house expecting a prime cut of porterhouse, stuffed baked potato, and iceberg wedge salad with chunky blue cheese dressing, but instead receiving a McDonald's burger with fries. What's the problem?! There's way more McDonalds places than fancy steak houses...so we're just doing stuff like they do. It's beef...there's potatoes and lettuce...we're even throwing in a pickle and kethcup for ya! [well, there's some percentage of beef is in there someplace...]
(I have got to stop posting to threads in the morning before I eat something. Excuse me.)
There is no level of which this analogy works, I'm afraid. Rules are rules are rules. In the end, they will out. The rules are not worse for being in one book. Indeed, on the contrary they are almost always better (if only slightly).
Perhaps your "I will buy it even if I never play it" deal is clouding your analysis here. If you are buying things you have little/no intention of playing, you are buying them for rather unusual reasons. There is absolutely nothing "foreign" or "mad" about the DMG being optional to people who play RPGs rather than thinking about playing them, I'd suggest. I've played dozens of RPGs where it was optional - none of them were "McDonalds". On the contrary, they were often far higher quality than the D&D edition contemporary to them (particularly 2E).