I AM WARHOL
Veteran
But half that list are from the 90s or early 2000s. There are definitely some adult protagonist amines out there tho. But I feel like a lot of them are slice of life. I usually just think of the character in these amines as older.Oh. Thought he was in college. Just about all of that should be right though and that's only what I've seen. There's plenty of shows out there you could get into if you really wanted to watch adults in anime
I get saying there's more anime with kid protags that's true, but there isn't a shortage. You just gotta go out and find the shows.