After spamming every single day all my facebook friends for a solid month about supporting my kickstarter, I'm sure there isn't a single person in my life who doesn't know I make comics!
I also illustrate a monthly safety comic for my lab at work, so all my coworkers obviously know that comics is sort of my thing. I also actively recruit folks to work for me at conventions, so that's a thing too. My two writers and I try to do a lot of local things, book signings at comic book stores, library conventions, etc. I just sort of accept the fact that drawing is apart of me and I like to share it with people around me.
I don't draw anything I'd be particularly ashamed of, so I don't really hide anything either. I use the same identity online as in real life, because I want to build brand recognition and make sure that folks in real life know how to find me online. It just sort of makes things easier.
I'm also old, so maybe that's always why I'm not too worried about it? I understand if teenagers and minors want to keep their identify under wraps online since there are a lot of creepy folks out there, and your privacy is really important. I definitely wouldn't want my son to use any personal information online until he was an adult, even if he was trying to build a name for himself in the art world. Alias are perfectly acceptable to protect yourself.