In the 70's, a very good friend, both musical and personal, asked to borrow my Rhodes 88 for a gig. I said yes, totally trusted him, wish I had not. It took me a couple days to track him down to get it back, he made no effort to return it to me. Maybe because when I did get it back, three of the tines were broken. I asked him what happened to the Rhodes, he said it must be f**ked up, it wasn't his fault they broke. I had never broken one before, I actually tried to hit a key so hard that the tine would break (what's one more?) and it wouldn't. He didn't offer to pay for repairs and when told what it cost afterwards, he said something on the lines of "glad that only three broke". Lesson learned.
A few years ago, a friend asked to borrow an PA amp from me for a gig near me. He was desperate, I said sure, I went to the gig, (I wanted to go anyway) at the end, I packed up the amp and took it home. I think he thought I was weird doing that, but it got home safe and sound.