Something I've always wondered is why musicians peak so young, especially in comparison with other creative types. First, let's qualify that statement. Is music, like mathematics, a young person's game? Musicians tend to release their classic albums, i.e. what general consensus agrees is their best work, in their early years, not when they're 40+. Look at the biggest, long-running music acts today, such as The Rollin…
Even composers are like that. Most continued to put out great work until death.
The thing with popular music, is that it's supposed to be popular, trendy, and just new. Talented composers start putting out innovative works when their are young, and in the eye of the general public, those are more salient, more praise-worthy.