My husband hates to borrow anything. When he's working on something and needs a special tool, he will buy it rather than borrow one, even if he only uses it once! We have one friend who always wants to loan us his broken equipment so that my husband will fix it before using it, and it generally costs us more for the parts than it would to buy another one! Not long ago, he 'loaned' us a tiller - same problem. I told my husband to stop fixing people's old "junk" so I went out and bought him a brand new tiller! Problem solved!
Years ago, I had a very nice travel trailer, and some people had the audacity to ask to borrow it. I just told them there are certain things I don't loan, and that's one of them. Same thing with a Rainbow Vacuum Cleaner I had - it costs way too much to loan out and take the chance of having it ruined...
I loaned a rotary cutter and mat, and the mat came back almost in shreds so I'm done with that too.