[QUOTE=Unimatrix One]If COS are automatically given a 2nd seat for free, then the airlines will have fewer seats to sell, which means fares will have to go up, which means all the rest of us (including my 150-lb self) will end up paying extra and subsidizing the travels of COS. Why should I have to pay extra because other people can't control their diet and exercise?

There it goes again! Assuming ALL overweight people don't want to control diet and exercise. Not all overweight people are like that. Get over yourself!