As I'm writing I realize the question is, do I let her keep me out of dance competitions?
That's a victim mentality, it's why your wife calls you a whiner. It's why you are so frustrated and not getting what you want. You decide what you want and act accordingly.
How often is you wife affectionate, say ILY, initiates ML and filling your love buckets?
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.