As an ex owner of a few aircraft I can tell you that no-one will do the checks better on an aircraft than the guy who is going to fly it. Or no-one with any sense that is.
Anyway, what the hell do you do sitting with your aircraft day after day when the wind is too strong, the cloud base too low, the wind in the wrong direction, need I go on. There's a limit to how much you can polish the wings!