Yeah I'm currently on paternity leave while my wife continues to work and it's glorious. If my wife made double my salary I would quit immediately as long as it's OK with her and I would have a great time with my daughter and the cats.

I think the only reason you would be mad is if you 1. derived your self worth from how important your job was and 2. you ranked the importance of your job based on its salary. Otherwise it didn't make sense.