Sentimental value!
Sorry but couldn't resist. Seriously though, have you ever had anything stolen at a gig? What are the chances of getting it back?
This probably sounds really stupid but my uncle gave me a cheap stick bag back in about 1969 he always encouraged my drumming, I have used that bag ever since and a few weeks ago it was stolen. I left it behind at the gig, you know everyone wanted to help carry gear, and I lost track, came back for it first thing the next morning and found all the sticks on a chair, no bag.
I've also had throne stolen from a gig while loading out, left it by the van and went back in to double check, came out and pow! No throne.