Indeed. I'm not sure that anyone here at Chess.com at the beginning thought we would hit a billion games played in our lifetime. But I guess after 10 years....
To put things in perspective, 2 billion games in 10 years is half a million games per day on average over the 10 years. Considering you didn't start at that rate and that it's an average, it means you have way more than half a million games per day now. (that's also more than 6 per second!)