For me, yes. Some of my tubes have 4 or 5 patches and they still work perfectly.
I live and ride in the land of thorns, so I flat all too regularly. I collect the tubes and patch them in a batch when I have about 10. After patching, I fill them up with air, and if they are still holding air in the morning, they get stashed for later use -- the ones that fail (maybe 5-10%) get binned. I've never had a good patch fail -- and it's pretty easy to tell if you got a good bond.
Plus it's pretty satisfying work.
