I've had things stolen from my bike. Usually I lose cheap things like water bottles, patch kits and tool kits.
I've wondered what compels people to rip of cyclists. It is not as if they were getting valuable goods. I suspect that it is some sort of psychological compulsion to rip off cyclists.
BTW, I've also noticed that theives like to target trailheads. I guess they like ripping off hikers.
Right? A thief is a thief, so some kind of compulsion. The seats can't possibly be worth much or the other little bits. Too bad there is no best method available for securing a seat at the moment and I can't insure the bike either since it's not brand new