This is the most ignorant, most thoughtless, most brain-dead argument people can make.
Think for a second. How would a life form evolve from a planet like ours, to require temperatures of say....300 degree average? It doesnt. The world is perfect, because we evolved around what we had available. You simply will not have something evolve to require something it can not have. It just doesnt work that way.
Edit: Also, since this world is just so perfect... Explain radiation, earth quakes, tornadoes, illness, etc. And just to ruin your "perfect" everything even more. If god is so great, why do we use the same hole we breath with...to eat with? I mean, lets further quote Tyson, why are our genitals smack dab next to our asshole? What the fuck kind of "design" is that? That would be like if Ford started putting exhaust pipes pointing in the driver side window levels of stupid.