The Transition from Modernity to Post-Modernity in a nutshell
But what comes next?
He got old enough not to care too much about appearances, and important enough that he didn't have to dress-to-impress a boss, and started wearing what every dude really wants to wear.
You could drape yourself in velvet
and started wearing what every dude really wants to wear.
I definitely would!
And then you have people like Snape. Dark cloaks ARE his comfy wear