I agree that Discord, in human form, shouldn't look too old. Early forties at the most makes sense. I think the reason others draw him as older is because he's supposed to be as old or older than Celestia and Luna.
I LOVE how many people out there think of Labyrinth and Phantom of the Opera when it comes to Discord. It is so cool!
Aww, you made Twilight look so adorable
I never thought of the this couple but you've made it kind of cute :3