Simple don't break the law...case and point..
Well, I must disagree with you. SOME "laws" are simply insane, and begging to be broken. Especially, when it comes to vaping.
See the new European TPD, for example: A directive for new legislation that was supposed to fight tobacco, but instead will actually help tobacco sales, by getting rid of competition.
When a "law" is made NOT for the best interest of PEOPLE, with health concerns in mind, but is made instead for the best interest of lobbies and big corporations, with economic interests in mind, DESPITE what will happen to the health of real people out there, I believe PEOPLE have the right to challenge such laws.
Incidents with DIY are not even our main concern, I believe. We have seen people here (decent folk, family mothers and fathers) who openly admitted to resort to a black market, if need arises. Who will control it? Is the shady guy selling "bath-tub" e-juice in the night-club going to be accountable for the lack of quality control, if someone gets really ill from his "product"?
When the law-abiding (decent folk, honest folk, the pillars of a stable and peaceful society) start challenging a law, then maybe it's time to change that law... IMHO.