Sure, but before I didn't and thus, whether I opt to pay for the lounge or eat in the terminal, I am getting less value from my card than I did previously. If I were to accept the proposition that a visit to the lounge is worth $50 (which I don't), I could calculate that erosion in value by adding up the visits I do not make to avoid paying for a child or, if I choose to pay, the additional cost I now incur for a benefit that was previously included. Of course, if I choose to pay, those claiming increased value from not having children in the lounge do not benefit, it just puts more money in Amex's pocket.