Sci-fi
Sci-fi is where the obsession started. Vehicles, vessels, structures, atmospheres - futures drawn as if someone has to live in them, repair them, drive them home from work.
I draw subsystems before silhouette. A rover needs suspension that clears the terrain. An orbital tower needs a way to get supplies in and crew out. A flying police car still has to be parked. The architectural habit of asking how a thing actually works follows me into the fiction; colour, light, and cinematic framing are the part where I'm trying to make it beautiful.