Let me assure you; there are some truly vile people we have to put up with, especially to certain European destinations during the summer months, and if they couldn't afford to fly they would be no great loss to the decent, law-abiding passengers on board.
I have long advocated a return to a flat, inclusive fare. Catering could be an optional extra but a bag in the hold (it costs no more for the handlers to go out for one bag or 50) and a fixed, median fare would be fare for all.
Remember, if you've paid £35, some poor devil has paid £250; an aircraft costs a fixed amount to operate.
Someone above mentioned the root cause of the so-called Low Cost Carrier - corporate greed. And it was accepted hook, line and sinker mainly by the 'vile' newcomers to air transport. The rest of us had no choice but to grin and bear it.