What ever happened to a good old dose of tolerance? That's the problem with the "me" generation, so self-absorbed that they feel they should be able to control every aspect of their lives including the inconveniences made by others. With the vast amount of technology out there(noise canceling headphones,cell phones,ipods, laptops, PSPs etc.), I have absolutely no sympathy for a person that can't somehow distract themselves for the duration of an average flight.
People need to learn to deal with age old problems like babies on airlines instead of just deciding that things have to now change just because they can't or refuse to adapt. Sure crappy parents make a flight more difficult, but such is life, deal with it.
Bingo. Not to let crappy parents off the hook, but we all need to acknowledge that in the great scheme of things, tolerating fellow human beings for a couple of hours while hurdeling through the sky at 500+ mph to get where we want to be is not a terrible inconvenince.