I look at that statement ("Get a life") as unrequested advice, and as such counts as something that I can ignore. Although, I usually only hear it in reference to people who take their fandoms to Obsessive-Compulsive levels, at which point it's more a "come back to the real world" plea.

Everything I know of you (which comes exclusively through your LJ and your comic), no one has the right to say that to you (outside of good-natured ribbing). You're as balanced and reasonable as anybody-- moreso, since you have an outlet for your passions.