>My handwriting sucks (I literally can't read my own; I'm 42yo - don't tell me to practice / it'll improve, just don't be that arrogant ignoramus ;).
I am close to 40, 2 - 3 years ago, I re-practiced handwriting with my daughter who wanted to learn (out of school) writing. To my surprise, my handwriting did improve and I was actually surprised by the result (cursive, I am French), hers was miles ahead of mine but really I was damn surprised by how effective it was.
I used to have teachers that refused to correct my copies because of my handwriting, so it's never too late.