I've seen the shark bite things for PVC, and even have some, just waiting to use them to fix the next leak. I haven't seen the copper versions. Why in the world can't I invent simple stuff like that?

I've had good luck with epoxy. Never a leak, either at the time of the repair or later on.

I know what you mean about worrying about how long things last, now. Sometimes I'm not sure I'll outlive the usefulness of a wet paper plate.