That always baffled me. Why is it so critical that the church lawn gets mowed before every Sunday morning service?
You wouldn't believe the number of locked up chainsaws I see on an annual basis, with the excuse "I loaned to a friend/neighbor/BIL", etc.
Never loan a chainsaw.
Sad but true. When we were leaving last time for a multi-year job assignment overseas, one of my "friends" asked could he borrow my 1/2 inch Dewalt drill and another asked could he borrow a heavy canvas tarp. When I got back 4 years later, both claim I never loaned them to them.
As for me, I was taught if you borrow it and it breaks, you fix it before you return it. I try to return anything I borrow in as good or better shape than when I borrowed it. If I needed to borrow a chain saw, I would sharpen the chain before I returned it and make sure it was full of gas and chain oil (even if when I borrowed it the chain was dull, no gas and no oil). Way too many folks would return it locked up, with a chain they had hit a nail or run into the dirt and out of gas and oil.
I am an optimist (or a fool). I still will loan a guy what he needs...till he teaches me that is a mistake.