It's never nice when things go wrong - it can be downright frustrating. But having to find out why and then work how to fix the issue gives us a greater understanding of what we're doing.
If things just always work then we can become complacent and not put in the effort to truly grasp things.
Still, Ron knows me too well. I love to tinker and tweak, and can feel a bit lost when I've not got anything to work on.