While abusive work environments may not be the norm for the majority of people, this being a law will benefit everyone.
Saying this doesn't happen to you in threads like this just signifies that you don't care, you basically downplay other people's bad experiences because well, it doesn't concern you.
You may not be affected now but you never know when it will happen to you or to someone close to you, and you would be glad that such law exists protecting you.