As have I. But I suppose I'd note that only about 4-5 of the hundreds of tubes I patch in a given year are from my own bikes - the rest were collected from non-profits which refurbish old bikes, and the patched tubes go back to the non-profits as needed. On Monday, a friend came over and we checked & patched over 40 tubes in a few hours. I only recognized one or two of them as mine.

As for patch reliability - I leave patched tubes inflated for a minimum of 72 hours to test for slow (or fast) leaks and for patch integrity. The attrition rate is about 2-3% - most often slow leaks from a previously-undiscovered hole or a failure elsewhere (typically an old tube). Very few failures of the patch. But when I'm patching in bulk I thoroughly prep each site with a mini-dremel with a sanding drum to get clean black rubber before applying the vulcanizing fluid.