There are many things that break or need maintenance on my ICE vehicles that I don’t want to mess with myself: oil changes, transmissions, alternators, belts, engine issue (oil leaks). Engine air filters are about the only ICE-specific piece I don’t mind doing myself.

Re: brakes, where I live, I don’t think salt will play much a factor, and not sure what you mean by “fuel efficient driving” wearing your brakes, but I’m using regenerative braking 95+% of the time.