D&D is not one "genre". It's a blueprint for whatever story the group wants to tell. It does heroic adventures just as easily as anti-heroes out for their own gang and everything in between.Yes, but this is the point of the whole "no evil" rule. Why is this common rule even necessary in the first place? Because the game says that "evil" is a possible alignment for characters, which frequently results in GMs stipulating "no evil" for PCs. Though in the absence of alignment, I would likely not frame this as "no evil," but, rather, more positively as "pro-heroic" and set up the play expectations more explicitly and concretely with players, which is again one of the many problems in this game that could be easily solved by communicating with each other like grown-ups.
I do also stress that I prefer heroic campaigns because some people run campaigns based solely on personal gain, acquiring wealth and power. So if the players want to take a break from being heroes and just want to loot dungeons for a campaign, that's okay. But they will never play evil murder-hobo thugs while I am the DM.
I really don't understand "easily solved by communicating with each other like grown-ups." I set expectations, we discuss it like grown ups. I'm very open on what type of game I enjoy. I have no idea why you have to make insinuations that I'm some kind of control freak or tyrant DM.
Again, it has absolutely nothing to do with alignment, you seem to be saying that I'm playing wrong because I don't use your phrasing and I couldn't disagree more.