I guess we are getting to the age of moms with Steam accounts.
Steam launched in 2003. 22 years ago. The median age of a mother in the US is currently 27. There are probably grandmothers with Steam accounts.
I was comparing Steam accounts on Harrah's (Caesar's) patio with an acquaintance the other night and we both had the 21 years badge but mine was December 2003 and his was June 2004 so I still had bragging rights.
Was curious and checked my own, 20 Nov 2004. Which was 4 days after the release of Half Life 2 and for which I made the account.
I mean, my father made a Steam account 20 years ago and he's almost 70.