It may seem like a great idea to self-vote your comments. Hey, you get all the value back and you get sent to the top of the user's page! Isn't that nice? Well, all the reasons Nathan gave you not to do that are valid ones, and I'm about to give you another: people who are a lot less nice than he is will come along and flag away the value of your vote. So not only don't you get it, neither do the nice people you might have voted on if you were valuing their content. You have 77% self-votes, so you're clearly not approaching the concept of voting as a way to reward other users and grow the community. Please change.