No staying on Earth is sane, it's where you belong, it's the environment you evolved to adapt to, and thinking you have somewhere to live beyond it is kind of ...sad.
There is no other life in the universe except on earth. All of the dreaming is fanciful illusion. There's no life anywhere else, and everything man has created to defy earth (high fructose corn syrup, American cheese, trans-fat, margarine) has been shit and has led to nothing but death and disaster.
What the hell makes you think Mars would be any different from high fructose corn syrup, trans-fat and margarine?