I’ve got one, I can still haul anything 12’ and under legally with with tailgate up/down and flagged. And it gives me enough room to haul my kids around in the backseat.
A full size bed can’t have a crew cab, and any combination over that won’t fit in a 20’ garage, so you would need a non-standard “deeper” garage.
They fit a niche, just like most things. It’s not meant for everyone.