Air travel is often dreadful, and it appears the carriers couldn't care less. They jam people into uncomfortable seats and charge for the smallest amenities. As an experiment this summer, see what happens when airlines waive their checked bag fees.
People are cramming more stuff into their carry-ons. Every bag that gets flagged for additional screening or stopped for oversized shampoo bottles delays the security line for everyone else. It's time to give this idea a try.