Mars is a great guy, he's usually there in the sky when you want to say hey but he's made up of carbon dioxide and that's just not so cool. Plus, his red appearance is deceiving: it's NOT because he's red-hot but just full of iron. Like, cool, I can get that from some broccoli. Not even the curve of this planet's valleys can redeem that.

Pro: Real nice guy.

Con: Too reliant on his iron content to attract people.