Well I think the key phrase here is Just not to everyone. I have also lended equipment (mostly NOT instruments) to other acquaintances and friends, with various results. Just recently, an artist I played with about 4 months ago at a festival asked me to loan him a chorus pedal for the gig (a LARGE stage), and he went wired, straight his guitar to this pedal, to a backline Vox AC30 amp. Well, the guy thrashed the stage in some attempt to put out a show, and my pedal went literally flying, still tied to the cords, about 4 times. A resistent, not so expensive pedal, mind you, but anyway. Same guy who at a rehearsal at my house broke one string on one of my guitars without even mentioning anything about replacing it (Gig was pretty well paid, tho). This guy will never get anything of my equipment again, for sure. On the other hand, one of my former students, who has been a member of one of my bands for some time now, has been as responsible all around as I would have wanted, and more. He was having some rehearsals with friends of him at his house, and I offered him an 8-channel mixer so he could do better. I ended up giving it to the guy, who is taking a nice care of it. So it all depends, I guess, thing is in most cases it seems you'll never know until something happens. Question is: Are you willing to take the risk?