Paying extra to be seated together is airlines needing to find ways of making money on tight margins.
When tickets are booked, if there are child tickets purchased in a group booking the tickets should automatically group together or at least each child should be attached to an adult in the booking. So one adult would be grouped with two/3 children and the other adult seated far away.
Better still when you book you should click on a seat and the earlier you book the more choice you have. As a parent I'd therefore not book a plane if my young child were separated.
When you have very young ones the last thing you need is to have to spend extra hours at an airport anxiously waiting to see if you've beaten the other families and can get seats together.
It's not just the flight. The scrum on some planes to get off is horrendous. If there is an emergency who's going to do the oxygen, life jacket, position child to brace?
Better still when you book you should click on a seat and the earlier you book the more choice you have. As a parent I'd therefore not book a plane if my young child were separated.
There is a lot of this self righteous I've paid, I'm alright, tough luck for you if can't and you're not ok, attitude in life at the moment. All that indignation and smugness would be better directed at getting better deals all round for everyone.
If we all said no, as parents we refuse to fly with you on principle until you revisit this policy ... None of us would be paying to sit next to our kids. Ok we might be paying more for something else but distressing, potentially unsafe and harmful situations would be avoided.