For what it's worth, the only map I use for D&D is a high level map I made years ago and a rough map the current campaign runs in. The prep I focus on is Interesting world building, deciding factions, individuals, events and obstacles that make sense that may or my not come up in this (or any) campaign. Most of that is done when I'm trying to get to sleep, it helps me take the focus off the day.
But the real question I'm meandering around to is, what does any of this have to do with D&D and the supposed thread topic? Is there any way to tie it back? If not, carry on and ignore this. This isn't just to you, but to everyone that keeps bringing in other games.
Because to me, it still all goes back to preferences and what we get out of the game. In D&D, as a DM I get to stretch some creative muscles. It lets me imagine the setting for a fantasy story. As a player of a PC I'm running one of the protagonists in that story. I like that those roles are completely different. But it also means that as a DM I don't really care all that much about the growth of the PC or their goals per se. I care about the enjoyment of the players and try to create an interesting world to run around it, hopefully I present plenty of opportunity for them to pursue their goals.
It seems like a lot of games are far more character focused, which is fine. It's not that I don't care about character goals and whatnot, but they are secondary. But just as important, most of my players don't seem to care. I have a hard enough time getting them involved with downtime activities or fleshing out a backstory. I encourage people to speak out if they want to pursue some personal goal for their PC in my session 0 and I don't remember the last time anyone did.
Which is just my rambling way of saying that different games serve different purposes. You aren't "doing it wrong" if you run a more collaborative game, at the same time you aren't "doing it wrong" if the DM maintains final authority of everything but the PC. The latter is what I prefer, same goes for the vast majority of people I play with.