On the internet and just anywhere I often use a name that is slightly different from my birth legal name. Part of the reason is that I feel I'm not quite the same person as I was in younger days. Occasionally someone will question with a note of disapproval. I say if they don't like it or don't understand I don't care. I think it's perfectly okay to get a new name. I guess people think they or their personality is cast in stone -which is far from the understanding of modern psychology and really primitive thinking.