Why not get rid of chat?

Typing in chat, no matter the context or the topic, is a risk. You can get banned or tilt someone, even by accident. I've been banned for putting question marks in chat, and tilted someone by the same means. Why doesn't riot just remove chat and leave pings as the only way to communicate? If we can't remove chat for everyone, why not have an option to disable chat? Chat brings a lot of good things to league like coordination and team work, however the bad outweighs the good and chat often starts the loss in a team because of what some put in the chat. If chat was gone, getting tilted would be less likely. I understand that you can mute people in game, though still some people get carried away, myself included and leaving it there as an option still wouldn't be good. In my eyes chat being removed would be an improvement, what do you guys think? This would be a good discussion.