Seen here:
http://i28.tinypic.com/qzm0rt.jpg He’d never have to worry about Libyans or plutonium or nuclear power that made him squirm. He’d be able to summon 1.21 gigawatts for his time machine whenever it was needed.
He’d never have to worry about boredom. Time passes quickly when you can shape the very clouds in the sky to your whims.
He’d never have to worry about an outing being ruined by inclement weather. Just push it away in another direction.
He’d never have to worry about transportation. Summoning a wind to carry you was simplicity itself, once you learned how to land.
In fact, if he didn’t have to worry about getting soaked when he was upset, or possibly destroying a room (or a building) when he got angry - Doc might actually like his weather-control powers.