Yep - my coaches don't bother taking mine out anymore either and I prefer it otherwise I tend to get my gums scratched if they try.

I am finicky but I have 2 older brothers and a younger brother so growing up I pestered them instead of my parents . Still I think a lot of people develop pre-competition routines/ traditions that work well for them.

Although I know you need to be able to adjust to change too which I'm not good at. For example travelling to an interstate comp with a team and getting there early throws me a bit. Having a week without my normal work/study allows me to stew on an upcoming competition and get too nervous because I'll usually try to distract myself with work. My routine is better for small local shows where everything happens over a weekend.