What is something you are certain you'll never experience?

Standing on a stage, performing a longer, self-made piece of music, in a successful way (as in actually sounding good).

While I have visions of what I want I lack the technical skills to put it on paper and make it cohesive. I absolutely do not have a singing voice, and I doubt that even with training it could be improved enough. It would cost a ton of money I don't have, and have little chance of earning. A support network who shares the vision would also be required.

There are just too many loose threads hanging too far up.