That’s true, but I find it boring to ask for the experience without the cost of it. If I want an older character then I’m expecting an older character all the way around- not just experienced from their years, but they magically (unless, I suppose, that is the in-universe explanation. even then, though) appear to be 20.
I guess I’m a sort of go big or go home person. It seems unfair to ask for only the ‘desirable’ aspects of aging from a character, but then ditch all the rest. Character design, even in text, is where half of the interest lies for me, and I’ve seen way too many “wise and old, but still young and pretty!!” characters for me to be interested.