Fat passengers
It is way over due, that fat people be deprived of certain liberties, due to their own selfishness.
Not only seating in aircraft but many other areas, obese people compromise others comfort because of their lack of consumption control.
Being seated in an aircraft, every passenger has paid for the right of comfort and this should not be compromised.
The sooner that airlines take this approach, the better for all.
My sympathies to anyone who has endured a flight with an obese (fat) person beside them.