What about flying fixed wing and rotary wing aircraft randomly day after day? Is that acceptable?
Why not? I have often flown fling-wing and fixed-wing on the same day. The pre-flight (and all) checks are vital for both.
A killer item lurking in helis is lifting off with the collective and cyclic frictions tight. In light helis, you check for free and full movement before starting and then tighten the frictions again. Obviously you can't do free and full movement when the system is up to speed, so checking the frictions before lift-off is critical - as critical as checking that control locks are removed in a fixed wing.