I really think there should be a fee for every bag brought to the airport. You get a personal item, that fits beneath the seat gratis. Then, for checked bags you get charged $25. For carryon bags, that need to be stored in the bins, you are charged $15, maybe $10. It's getting to the point of ridiculousness. The stuff that people are bringing onboard with them lately is completely out of hand. I try to get seats in front of the wing. My issue is that many times I have had to find a different bin simply because those around me are taken. Why? Those in the seats behind me have put their bags further to the front. Now, I can't say for sure if that is because they are just plain rude or if it's a case of those behind them taking the spaces so they now have to move their bags further down.
But, when you overhear a mother chatting with her dh at the airport about how they 'beat the system' by carrying on all their stuff, rather than check any bags..and then you see the huge bags each of them have, it boggles the mind. One family of four had....a huge carryon bag (at the limit or even larger), a huge tote bag for each person, and two shopping bags from WDW. I couldn't beleive that they were allowed to board with all that stuff. And to think I was worried about my underseat backpack and my smaller than regulation rolling duffle.
With the prevailing sense of entitlement nowadays, I think we are going to continue to see a lack of airline etiquette. Everyone thinks they're being nice and all....but their needs seem to come befoe everyone elses. It's that 'you first...right after me' mentality.