Get rid of punishment system

Please show me the good that's come from punishment and banning of people? Because all I've ever seen this system do is piss people off, and have their accounts banned forcing them to make new accounts. Or alternatively in an extreme case quit the game. Which in no way to be clear is a win for riot. And I've heard every argument you can imagine about "well what would yo do instead?"

Here's my answer to that, you have 3 mute buttons, by riots own claims if someone is toxic you CAN mute them. And if they are truthfully standing by that statement than you don't need a punishment system attached to it do you? Because by your own companies logic there is already a system in place to deal with toxic people, anything beyond a mute button is in my opinion overkill, you're just shooting yourself in the foot by stacking ridiculous punishments on top that.