I can't tell you how many times over the years I have ended up with nails or slivers of metal in my tires. I've gotten so used to it I carry a patch kit and can patch a flat in about 15 minutes if I have to. Fishing in all the out of the way places I do and being around construction, you just pick up these things.
Slow leak at first and all of a sudden you have a flat. I bet your wife is glad you got that tool. Saved her some grief.