If you pay attention, you can tell the good folks from posers. I have 2 knives out on passarounds and 1 honyaki out on 1 on 1 loan with another going out soon. I will have ~$3k of knives out at once without any insurance at all. If all those people decided to be asshats, I would be out a fair bit of money. No paper trail, insurance, etc. That doesn't take into consideration the fair ammount of value of stones I have out as well. If I lose here and there, (which I haven't yet), it is the cost of living my life without fear of everyone I encounter is out to cheat me. I assume that most people are good and will do the right thing. If and when this fails, I am way on the plus side of the ledger. It is worth it to me to not have to be suspicious of everyone I encounter. I have completed countless trades, sales, and purchases on this forum and others without a single incident and i have used friends and family transactions for the vast majority. Obviously, it is foolish to do this with the guy that spams to the required post count to make a sale post, but in my experience, the vast majority of members here are honest people and act accordingly. For instance, I would not take part in a passaround that I would not be in a position to replace the knife if it were damaged in my care. I would do this without reservation knowing that I benefit much more for the opportunity to participate. By and large, people are good. Have faith in this community and things will improve. It doesn't mean you will never be burned, but you and this community will be better off in the long run.
But, like all things, YMMV.