Um-hmm, my point exactly. You don't know who was there before you in a public setting. So, for the general good, states pass laws that require certain standards be met before the business is opened. I know that isn't a 100% guarantee on anything, but it is for the general good and in my opinion shouldn't be done away with.
I don't want to pay taxes for somebody else's food stamps. I don't want to support some old fart through social security when it won't be there for me. But I don't mind paying into the general safety of the public. Licensing somewhat insures this and shouldn't be done away with in my opinion.
If the government knows the best practices, it could serve the public much better by publishing their information for the general public to consume. Such as PSA's on TV and radio.
But this really isn't about public health. This is about busy-body bureaucrats telling more and more people how to live their lives.