Law is another job that should be left to the pros. Everybody thinks they know the law, until they have a real legal issue. Then, if they're smart, they realize the waters are deep and the consequences are great and they hire a lawyer - if they can afford one. That's the problem: a lot of people can't afford lawyers. I tried to solve this problem once by creating on online marketplace where people could purchase a-la-carte legal services from live attorneys who worked independently and remotely. The idea was that if we could cut out the overhead that big law firms have, we could provide quality legal services to people at more affordable rates. The business failed, I went bankrupt and most people still can't afford a good lawyer - so I guess it wasn't meant to be.
Shooting machine gun is another job that should be left to the pros. I'm not talking about your hunting rifle or the six shooter you keep in your dresser to protect your home in a worst case scenario. Those aren't the problem. I'm talking about assault rifles. Death machines. Machines that were specifically designed to kill as many people as quickly as possible. Of course there are situations where the military or law enforcement may need that kind of artillery, but there is no situation where Joe Shmoe does. None. Joe Shmoe has his six shooter. If Joe can't get the job done in six shots, then that job is better left to a pro - just like law and haircuts.