Can anyone think of negative consequences if we reverted all back to the wild west type of society?

Imagine if our society went completely back to the style of the wild west and by this I mean if there were absolutely no gun laws and you can shoot anyone for any reason given.

Imagine if a guy bigger and taller than you wanted to tough you up or intimate you or harm you and you decide yo shoot him and you're both in a public place or even at a store or otherwise, what exactly would be the problem with that?

Don't you wish you can shoot someone if they make you feel physically or verbally threatened or intimidated or tries to square up on you? Why would that be a problem exactly?

Can anyone think of negative consequences if we reverted all back to the wild west type of society?
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