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The good news, OP, is that once you learn, it's impossible to forget. "It's just like riding a bike" refers to being able to do some skill perfectly after many years of not practicing.
But damn. I've never heard of someone not learning to ride a bike until they were 24. Can you at least swim? Whistle? Tie your own shoes? Being a functional human being is great, but don't overdo it. You could sperg yourself to death.