The consensus seems to be that you should play the guitar, GUEST.

But that doesn't mean you have to risk having it stolen or vandalised by taking it everywhere. As I said before, I decided to play mine whenever I feel happy that the venue is 'safe', but I've played a few gigs in rough pubs where I wouldn't have felt happy taking it along, so I substitute an older, less valuable one on those occasions.

Just use common sense. If you would feel uncomfortable taking it to certain venues, then don't. But try to use it the rest of the time, and get some pleasure from it while you can - you might end up under a bus tomorrow!

(I sincerely hope you don't, though, or I'll feel terrible about it!)