If one were to change their name, it would throw me off who they were. I would lose what I had for and/or against them. This is more or less the case for everyone. Its primary use in theory would be to therefore use it to escape any wrongdoing.
lol @ changing your username. I've had this username for years.
And yes, that is way longer than I've been on this forum.
I use Internet Explorer 9, voluntarily, after trying the most recent versions of all major competing browsers. I feel this information is very important to share so that others may disparage my opinion.