A while back I fought a red catamaran bomber in my kusari gunboat.
After about a half hour long fight, I had destroyed most of his equipment and run him out of bats/bots, and he just gave up, sat still, and said "kill me".
I obliged, but only because I knew if I didnt kill him that he would suicide somewhere, and because I needed the death message - i had a bounty for him (which I was minutes late in collecting, unfortunately).
Now, to be fair, it is somewhat in-rp for a blood dragon or any kusari pilot to suicide if they loose a fight but arent killed, it's called seppuku - ritualistic suicide after dishonoring yourself. But for most other people, it's just an OORP way to avoid a repair bill.