I just seem to function better on days. If nights really does cause cancer, then I will be a good candidate. There are so many factors that must be considered before a statement like "nights shift causes cancer" can have any relevance. My 2 cents worth.
Duty is the sublimest word in our language. Do your duty in all things. You cannot do more. You should never wish to do less. General Robert E. Lee, C.S.A.