Disciplined Badge: Deleted own post with score of 3 or higher.

I don't see how this badge affects the community in a positive way, and it might be doing more harm to the community than good.

Even if this badge is moderated for abuse, it wastes the time of moderators for a useless reason: "Some guy deleted a good answer for this stupid bronze badge"

(Negative effects of this badge / Positive effects of this badge)
Is definitely over 1 and I think it should be deleted or stopped from being earned anymore.

TL;DR:

To get the Disciplined Badge, you need to delete an answer which is not accepted with 3 or higher score, then undelete it a minute later. You will not lose any reputation this way and earn a free bronze badge, since it is legal and known, I advise everybody to do this.