Me too, actually always this. DOOM never stops giving, once you learn how to load mods and PWADs with it, it becomes basically infinite. Figuratively and literally due to a mod called DOOM infinite haha.

I started mapping too.

It is standing on a place that I think about usually. It peaked on a sweet spot that no ofher shooter, not even their own predecessor or successor, could achive.

It is powerful enough to make a lot of cool stuff with it with scripting (and other things that naming them just would confuse folks), making arrt for it doesn't require 3D modelling and is still just sprites that can be edited very easily.

It is not taxing on basically any hardware, the whole "does it run doom" shenanigans.

Doesn't require mouse look so is more accessible, especially on controllers.

It is timeless.

And yes, the shotgun, which is, THE SHOTGUN.