At the risk of jinxing myself, it's been a long time since I've patched a tube on the road. On the rare occasion I get a flat, I use the spare tube I have with me, and the Rema patch kit just waits for my luck to worsen. Saving up punctured tubes and patching them as a bunch of 6+ at home lets me get a lot of use out of a fresh tube of glue, and then I'm set for a while.
Also, bringing a spare tube is good karma if it can help someone else. My 650B bike carries a spare 700C tube as well since there's often someone who'll need it.
