They have the whole issue with people bringing in too much luggage and they have to charge more if its over a certain weight because the airplane gets worse gas mileage if its heavier, and then charging extra for fat people and all that, so why not do this airlines.... Charge by the pound! People would think twice about bringing 7 bags of clothes for a 1 week vacation. Fat people would try to lose weight a few days before going on a vacation. People like me that do not like to bring anything bigger than a backpack would get a lower fare, instead of me having to split the cost with the guy that brings 200 pounds of luggage. Personally I think that would be fair and people that watch their weight and dont take alot of crap with them on vacation would get rewarded instead of punished. For instance. Say there is a fare to europe from California. The price charged could be 5 dollars per pound. A 200 pound man who has 20 pounds of luggage would pay 1100 dollars. A 300 pound man would pay 1500. Now i know what you are thinking...women would automatically get cheaper fares because they weigh less naturally and thats not fair...WRONG! You ever seen a woman travel...a 120 pound woman will normally carry her weight in luggage, so she's talking 1200 dollars! And if you are a light guy like me who weighs 150 pounds, you get a nice discount fare of 750 dollars! There ya go...charge by the pound and get better gas mileage on those planes!