Unfortunately, science doesn't support what you are saying which is very much like saying fevers are good for you. The Biosphere is not something to be trifled with and anybody who studies chaotic systems knows about feedback and attractors. Feedback, like on a microphone can rapidly go out of control, but when it happens on a planet receiving hundreds of trillions of horsepower all day from the Sun, feedback can turn the Earth into Venus where temperatures are above 800° F. With your terrible idea, Siberia could be 100° and the equator could be 200° and only deep sea vent worms would be happy.