Originally Posted by
tjspiel
Generally, I leave it on the bike. If I was really worried about the pump more often than not I'd have a way to carry it with me. If I had to leave my bike parked over night at a place like a college campus, then I probably wouldn't carry a pump on my bike.
I won't loose any sleep over the possibility of a patch kit or spare tube getting stolen.
Around here, that stuff will get stolen if it's left on the bike, especially in areas where there are a lot of cyclists. I wouldn't lose sleep over a stolen tube or patch either, but I might lose a lot of time if I had a flat and no way to fix it.