That's why voting a post shouldn't have the primary focus be on the self reward. Free speech isn't free, and the true value of an idea is highlighted when those in a system such as this support ideas even when the financial incentive is being stripped. One way to mitigate this to a smaller extent is to reblog the post, which if it's worth supporting despite heavy stake flags would qualify as being share worthy.
So all in all
Bad idea to upvote your posts
A great idea to upvote these posts :)