The only thing worse than a captain who never flew as copilot is a copilot who once was a captain. It's easy to make a small fortune in aviation. You start with a large fortune. Try to keep the number of your landings equal to the number of your takeoffs. You cannot propel yourself forward by patting yourself on the back.
Gravity never loses.
The best you can hope for is a draw. While it may be possible to ward off this natural event some of the time, it cannot, despite the best efforts of the crew, always be prevented. It's just what they do. Failure to heed this commandment can affect the morale of the crew. Loud, sudden noises in a helicopter WILL get your undivided attention.