Since I guess we're talking about Earth, where's the "No, because it's a bad idea" option? Go prove you can make Venus or Mars livable before you poison the oc

Since I guess we're talking about Earth, where's the "No, because it's a bad idea" option? Go prove you can make Venus or Mars livable before you poison the ocean or skies and unintentionally kill off all the fish or send our only planet into an ice age.