As a owner of two servers with large amounts of people. I absolutely despise griefing. I have never griefed, nor will I. It goes WAY beyond breaking someones stuff. On a good server it will just be rolled back and refreshed to normal, the person will be banned, and it would appear nothing happened. With ONE exception. The moderators, admin, and owners have to spend their time to deal with these said people. Taking their time to help maintain the server.
And I would argue that griefing is in NO ways good. It does nothing except waste time. The griefer does no lasting damage = time waste. The moderators, admins, and owners fix it = time waste.
tl;dr
Don't greif.
