ExploderWizard
Hero
Unlimited DM power, even to the extent of fudging monster hit points so as to keep them alive, or fiating player attacks so as to stop them killing "special" NPCs, is a product of AD&D 2nd ed rules texts (and similar era rules text in White Wolf books - the so-called "golden rule").
Those are not rules per se, more like terrible advice than anything else. I believe suggestions such as those did the most to put forth the idea that all DMs engaged in illusionism and regularly cheated to ensure desired outcomes.
I'm not very good at GMing Gyagaxian D&D, and not all that keen on playing it either. But I would prefer it to 2nd ed style based on unlimited GM power in the interests of "the story".
I do really enjoy Gygaxian D&D but the 2E style you are referring to disinterests me as well. Why play at all if your decisions and actions are meaningless?
I prefer a game in which the players can make meaningful choices as to how their PCs engage the gameworld without relying upon the GM as the sole mediator of whether or not those choices have an effect - and if so, what effect - on the ingame fictional situation. I have two main reasons for this preference: (i) I want the players to play a major role in shaping the outcome of ingame events; (ii) I do not want the conflict of interset, as GM, of having to both establish the adversity that confronts the PCs, and deciding whether or not they are able to overcome it. For me, systems which do not satisfy constraint (ii) - ie systems in which the GM decides to "allow" things or not based on whether or not they are "good for the story" - are insipid and uninspiring. Whether or not they involve roleplaying, they all fall under the broad notion of the GM deciding what story will be told.
Here we disagree a bit. (surprise!!

I do not play to tell a story, and therefore don't really care if one gets told or not.