I don't think because some people don't obey laws that's a good reasons for not having them.
In a free society, there is never a good
reason for having a law. Laws are a necessary evil to place checks on certain behaviors deemed offensive or harmful by society.
Passing laws to fix a virtually nonexistent problem might feel
like a good idea
, but the net effect is a loss of liberty to folks who didn't need the law to be responsible in the first place.