gosh, what a morbid direction this threat took ... I have some non-signed drum sticks that I caught at some concerts I attended (you know at the end of the show, when they line up stage-front and toss stuff into the crowd). Anyway I've never collected autographs but I'll keep this in mind if presented with the opportunity.

I would think the joy is not resale value, but knowing you actually met that person, and being reminded (upon seeing the autograph) of that exact moment in time.