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”
Inari 
@SecurityWriter anyone with a debit card in the US or Canada has a “credit card” for all intents and purposes! LOL