There's loads of topics like this one, tws is exacly like this, there's a batch of new users, they make the place somewhat lively, others eventually join, they meet up somewhere else or get bored and they leave.
On top of it all, topics aren't as good as they used to, so there's not a real reason to visit back other then meeting the new peeps, so yeah! :shrug:
@AwkwardStranger you see.. When people discuss about sexuality, it's a very mysterious topic to argue and also logical at the same time, that's why as time goes on, people keep asking about their sexuality over time.