I appreciate this and have wondered the same. I never vote for my own comments but also never changed the setting on my posts that is automatic to upvote my own - I always felt this to be a bit too self serving but wondered if it was also best to leave it as such. After reading this, I am going to change that, it is not like I make much off my own vote anyway and would rather give others I find well deserving the precious few cents I have to offer.