I said 40 pounds because it's the price that was mentioned higher upthread.
A 6 and 4 year old across the aisle is a different matter than a 2yo in a different row though isn't it ?
And you still haven't explained to me why I should pay for something that costs the airline nothing.
As for "I choose to travel with him", well I could hardly leave him behind, could I ? And I paid for his seat, I don't expect him to travel for free. The company is equally choosing to seat people apart (on purpose. For no reason other than make people pay.) So they equally can't complain if that results in inconvenience for them.
And I actually agree, it's a lot of hot air over nothing when the company could just be reasonable. As said before, I'm happy to pay for things that actually cost money (meals, first class, extra luggage, etc). It's not about the money really, it's about the principle of the thing.
It's doubly unreasonable because people who need to travel next to someone are usually vulnerable (young children, seniors, disabled people), so they're basically taking advantage of that.
The whole thing makes no sense because you're saying "you have to sit next to them so you should pay."
Well, no. If I HAVE to sit next to my young child, you can't make me pay for it. Because we all know what would happen if I DIDN'T sit next to them.
Unless you want to be that passenger sitting next to the lonely 2yo.