You can loose and probably do without 90% of the systems on a boat. Plenty of time to learn and repair, on your schedule. In most cases if it breaks, no one gets hurt and life goes on.Thats the way I slow those gears in my head that would create stress from worrying. Whats the worse that could happen.
Preventive maintenance is always a lot cheaper and easier than repair/replace...plus you get to do it on YOUR terms at YOUR convenience. Things only break at the most INconvenient times. Try telling your wife or your guests that no one got hurt and life will go on when they can't flush the toilet or no water comes out of the faucet or the generator won't start so you have no heat/ac when it's cold/hot & humid.
--Peggie
"If you can't explain it to a six year old, you don't completely understand it yourself." --Albert Einstein