I would pay more to sit in a section with no children and I should be charged as well, I know I am miserable, it's not fair but a fact of life that kids can be very noisy on planes. As I have reported on QL before, I had the misfortune of being seated behind a dreadful woman in business class who placed a potty in the middle of the aisle and then expected us to clap when the kid did a poo!
Sometimes kids scream, that's life, you would have to be a pretty horrible person to make a fuss about that. Pushy parents who encourage their children to show off, sing, play hide and seek and poo on planes (yes lady, you know who you are) should be forced to travel from Doha to London on bicycle, let the kids travel in peace on the plane!