The rest of BoSoxFan45's message was so reasonable that I almost couldn't bring myself to take issue with this small portion of it. However: A crying child in Y will ruin the trips of more people than the same child will if crying in F. The child crying in F will ruin the trips of people with more expensive tickets, but not as many people as in Y, and which is not the same as "ruining everyone else's trip."

I would like to fly without children, except my own perfect but untested 2-year-old, but that's not possible nor socially desirable. Sure, I would love to have the airline "do something about" crying children, but what? What can the airline do that the parent can't? Also airlines don't do much about loud, rude, and drunk adults (who should know better and who could have controlled themselves).

I first flew at age 7 (F class transcon), and I was a perfect passenger the entire flight, except for throwing up over Wyoming.