you just asked this question to get a reaction, right? I mean, you can't honestly think there's a reason to tax fat people....... for what? Don't they already pay more for food, and bigger clothes cost more....... and if they can't fit in one seat on an airplane, they have to buy 2 seats......... so what's your point? that's like asking if runners should pay an extra air tax because running makes you take in more oxygen.