Why does r/AskTeenGirls have most of them being 2o-something year olds

We're getting very close to the point where our politicians are going to be in their 70s and the people in their 30s+ are going to be in positions of power. How is it that most of the teens are people who weren't even in school when we were?<br><br>We're including "Generation Z" as anyone born in 1981 or later.<br><br>Millennials are those born between 1981 and 1992.<br><br>Generation Alpha are those born between 2013 and 2025.<br><br>I'm sorry if this was the wrong sub, but I couldn't find more appropriate subreddits.