ok i think some of you need to be a bit more sensitive to this issue. some people have problems with this ok. it's not like people want to be obese. yes there are people who over eat and those need to get a wake up call and they can certainly do something about it i.e. diet and stop eating take outs etc. but there are those with medical problems who really can't help it at all. so stop being the school yard bullies. be careful what you say be in on a forum or in real life. it's hurtful.
Whether they are fat due to some malady or whether they are fat because they are disgusting fat slob gluttons is really immaterial.
If they use two seats they pay for two seats - or am I missing some important point here ?
What Dave said.
It's not a matter of being fat. If you weigh 55 and your luggage weighs 20kgs, vs me weighing 90 and my luggage weighing 20kgs then why am I not paying more than you? Simple. I only occupy the space allocated to me. Obese people should count their blessings that airlines do not weigh luggage+passengers & charge for anything above a specific weight category.
If you're oversized, you infringe on the space of those who paid just as much for their ticket as you did. You pay for the space you occupy. Simple as that. If I broke my leg and had to wear a cast that requires me to take up two seats, I will pay for 2 seats. Why? Because my non-standard physique is not the airline's fault.
As for increasing the seat size, if airlines did that, we'd all be paying 1st class ticket prices to make up for the loss of revenue due to fewer seating availability. People love sugar coating it as discrimination, when it's really just a matter of physics. Think about it, if Mr Jabba T. Hutt wants to buy an Audi TT, but he can't fit into it, would the dealership entertain his demand for a bigger audi at the same price?
When you purchase a ticket, you select which seat you want. seat. singular. If you're going to require more than one seat, buy another ticket. Same goes for disabled people who need extra seats for helpers etc. Every seat that you don't pay for, the airline absorbs by charging us more next time around. It's kind of like paying taxes so others can get water/electricity for free. Difference is, flying on an airline is not a basic human right.