@Reyn,
Oh I agree with you, Reyn.
I know what you meant about the "emotional rollercoaster", too.
I've only ever had the one username/identity, too. (For the record), both here & on Abuzz.
But, you know, I can well understand that if someone wants to discuss, say, a very personal issue, that they might want to use another name. It happens, I'm sure.