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.
whenever a cool name springs to my mind, i add it to a text file. i use that file when i create accounts or game characters and mark names in it i already used.
This is a cool idea