in my teens I used to think I would grow up and become too "mature" to RP, but frankly I am as interested in it as I ever was and am even grateful for the place it holds in my life
we're taught growing up that adults don't play, or that the only acceptable ways to do so are through sports or board games or whatever. making up and emotionally investing in imaginary stories with your friends is, at least in my experience, considered weird and embarrassing
but in truth it's still the source of so much creative inspiration for me. And it's just fun! It shouldn't take precedence over any other aspect of life, because that's where it gets weird, but like. You don't ever have to grow out of playing pretend.
In fact I would argue that, humans being the kind of animal we are, playing pretend is good for us: it can relieve stress, teach empathy, provide escapism, give us excuses to research things we'd never have cared about otherwise, and!! make friends we wouldn't have met otherwise!
in conclusion, I hope I never stop, because stories are very important to me and so are the people with whom I craft them