In my experience the worst children's behaviour is entirely due to the parents, and I blame them, not the children. The two worst experiences I've had, both in long-haul international J, were (1) twin toddler boys who shrieked and slapped their TV screens for hours while the parents just sat like suet puddings, and (2) a boy aged about eight or nine who never spoke softer than a shout, for the entire eight-hour journey (and even before, in the lounge), even though daddy was sitting right next to him (while mummy slept). Like you, I resent paying a huge amount of money (my own) only to spend the journey with selfish, entitled parents who make no effort to control their children.
