I have to agree that if I am sitting in an aisle seat or premium seat, I'm not moving for a 10-11 year old, unless I get a similar seat. Not giving up a seat on a plane doesn't make someone a jerk.
That is absurd if true; I would NEVER give up a good seat so two adults could sit together.
I suppose I was a little harsh when I used the term jerk. I am, after all, a firm believer in getting exactly what you pay for, especially when you pay extra for something like an aisle seat.
I would also never give up a seat just so two adults can sit together; if you want to sit together, you better check in early enough to get A boarding passes, or good seats assigned. But children are a different matter.
There are three things to consider when this issue arrises:
1) How will it affect the kid?
Some kids can handle being separated from their parents for a 2 or 3 or 4 hour flight, others can't. The older a kid is, the more likely is is that he'll be able to handle the trip away from Mom and Dad, and the younger they are, the less likely they are to be able to handle it. I hate to see kids upset or traumatized, so if it seemed on cursory inspection that the kid was freaking, I'd move to let the kid sit next to a parent.
2) How will it affect you?
"Oh boy I like flying do you like flying I have a Playstation do you have a Playstation we're going to see Mickey have you ever been to Mickey's house what's your name do you have a dog we have two dogs and a cat I have a little brother do you have any kids my dog's name is Ruff can I play with your computer I'm bored how much longer till we get there I'm hungry where is the bathroom HEY MOM! I GOTTA PEE! would you hold my Game Boy till I get back..."
What a charming kid; now if he'd only SHUT UP for the rest of the flight so I can get some sleep! On second thought, why don't I move so the kid can sit with Mommy.
And then there are the screamers; no way I'm going to sit next to one of them for 2 hours in a small plane.
3) How will it affect the rest of the passengers?
"WAAAAHHHHHHHH!!!!!!!! WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!WAAAAHHHHHHHH!!!!!!!!"
Um, do ya think maybe the kid would be quiet if one of us moved so he could sit with Mommy or Daddy? I would really like to be able to get a little shut-eye while we're in the air, and little Jeffery's hyena impression would rule out that option for a whole planeload of people.
Obviously, these 3 don't cover every single conceivable situation, but they cover the basics of why I will move to let a small kid sit with a parent. Adults, no way - you made your ressie, now sit in it, same as me.
I will be somewhat sympathetic if your flight was changed without your permission by the airline, but as unfair as that might be, them's the breaks. I would live with it if it happened to me, and all I ask is that you live with it without making similar unfair demands on me.