I think it will depend on how good you can fix it at the field on the moment you find something not as it should be. Remember if something happens and lets say you loose total control and you crash into someone elses plane or into someone for that matter - would you live with your concience. This is how I see it. Yes things go wrong even with everything checking clear in pre-flight. But then the "guilt" when something happens isn't that big I think.

But at the end of the day it depends what type of person you are - a chance taker or not.