Security Writer 
Valve: “We need a credit card on file to prove you’re 18”
Me: “My account is 23 years old”
Valve: “That just proves your account is old”
Me: “A credit card just proves you know someone with a credit card”
Noel KellyWhat happens if you don't cough up?
You lose access to certain games, or the whole account?
[My credit cards where created in the 90s]