Do you have a single username you feel attached to?
Or do you like to use different names for different occasions?
Edit two and a half days later:
Thank you all for answering my question! It was so interesting and fun to read all of your responses.
I really appreciate you for taking the time to write.
I guess it makes it easier to do social engineering
Exactly. Average person, not a big deal. But if someone for some reason decides to target you, you give them a huge amount of days about you quickly. I tend to make a new name for each service.