apparently you need that, otherwise you would pay your chiro to check your prostate
it's not fucking arbitrary, it's based on their training
dude, are you listening to yourself? the charges are not pulled out of somebody's ass, they are calculated to include the COST, WTF are you high or what?
it's not illegal to mow the lawn without a license, your examples are poorly chosen
OK, now pull your head out of your ass and PAY ATTENTION TO THIS PART:
you are free to do whatever you want with your own body and property. Want to drink detergent and herbal shit from Walmart (one of your stupid analogies)? Go ahead, do it. Want to cut your nose? Just do it. Break your TV? Fine. These things should not be regulated as they would infringe on your liberties, if you want to do them then so be it.
But what one's allowed to do onto himself is one and doing it onto others is something else. You look at things from your selfish perspective. You might be able to discern between the good and the bad choice. But most people won't. Everybody would be looking for a deal and shopping around. Therefore the prices for a certain service would drop to the point where a 'licensed' person might not be willing to perform the said service. And this is where the 'unlicensed' one would come into play, accepting a price that a legit, honest professional would not accept. And, of course, cutting corners and providing a service of questionable quality. So the quality of everything around you would start to drop because nobody would be held to any standards, the only benchmark being the price for the service.
People without the proper qualifications should not be allowed to do things that might jeopardize another one's health, property or even life by misrepresenting their abilities. And there should be an authority in that particular field of expertise to certify that the said service provider is legit and meets some minimum knowledge and requirements to perform the job one would entrust him to do.
So the law might not protect you, but definitely protects most of us. We don't always get the quality of service we want DESPITE all the regulations. Think what would be if there were none.
You're a funny guy. Cheers.