Hussar said:
While D&D may be complicated, there is no single system out there that gives the amount of support to game masters that D&D does.
Actually, I think that this is horribly untrue. IMHO, the only real support that the current edition of D&D gives Game Masters comes in the form of the DMG and pre-published adventures (many of which aren't actually licensed D&D products). Outside of those two resources, I do a
lot of work as the GM when I prepare my own adventures and/or campaigns (easily on par with that which systems like HERO or GURPS require).
The current system places a
huge burden on the GM time-wise, although this may not be readily apparent if you aren't working a nine to five job (I do and it is). The lack of a simplified NPC generation process, the emphasis on balanced encounters without actual 'ground up' math to support it, and the ever-growing collection of exception-based rules and resulting subsystems all make prepping for a D&D game a labor-intensive experience for me.
All of that said, I retain my D&D books because it's the one system that I am
guaranteed to find players for. I personally would prefer to run GURPS, JAGS, or even HERO as the amount of work that I must put into these systems is comparable to that which D&D 3.5 requires, though all of these cover multiple genres 'out of the box' while D&D only covers. . . well. . . D&D. The payoff for my hard work often seems diminished in that regard.
My time consuming day job has very much played a role in my deciding to invest in substantially lighter, less demanding, game systems (e.g., BFRPG) on one front
and true multi-genre rule sets (e.g., JAGS) on the other. At
worst, both approaches can give me the same kind of actual play experience that D&D 3.5 provides with
far less work. At
best, both approaches open up doors that D&D doesn't.