If that's the case other people will follow. There will always be people who won't let others decide for them how to play. People like you create them.
We don't ruin games for that matter either. In fact we play without cheats as long as the games are fun. You might know that a good game is defined by the time you can play along the "rules" without cheats until you start using them. Games that offer loads of features don't tend to get boring quick. In such games you can vary your gameplay easily. But as soon as the game is ruined by people like you or get boring in some way or another we extend the rules as we wish as long as it's possible for us. That way we manage to prolong the gaming experience. And variation adds fun.
Furthermore, we manage to break the hierarchies of online gaming. When admins get little control, more freedom and fun is experienced by the common player. Players and admins will be made equals, forcibly, if admins ban people at random for own personal gains.