Oh I would never be on board with someone else playing my player character. Not to mention my characters are generally extremely complex and playing them is difficult if you don't understand how they are put together.
We ran into a magic mirror that created an evil duplicate that attacked the party. The DM looked at my character sheet and said "why did this have to be [me] that looked into the mirror".
The Rogue does not stare vacantly at the wall. He is just flat not there when his player is not there. And in a world with extensive magic it is easily explainable and not even close to the biggest thing that makes no sense in the fiction.