My take is, everyone should at least understand that vaping is simply harm reduction as there has to be some dangers of inhaling vapor. I do believe the more vapor you intake, the more risk you are taking. Yes there are small mtl tanks that if over worked can have more bad stuff then bigger, airier sub ohm tanks, but If comparing safe limits of either, its basically the more you vape, the more potential for harm. If one really does believe that vaping is much safer then smokes, but not totally harmless, then you have to believe the more MLS you are vaping, the more potential for harm there is...with a perfect mtl set up, producing safe temps vaping let's say 5mls per day, has to be a safer option then vaping 25mls per day in a sub ohm tank....I still think the latter is much safer then smokes, so it's still a better option by far, but the intake of vapor , albeit much safer then cigs, has to be the same as smoking in that the more smoke someone consumes, the worse it is. I personally think its important for everyone to think this, because the more and more people dont want to admit this, the more its accepted that it doesn't matter how much you vape, it's all the same. With the belief that vaping 50mls per day is no different then 1ml per day, then new vapors or young vapors feel , why not buy a big ole device and vape all day, because it doesn't matter......I dont care how one vapes and certainly dont want bans of any type because vaping saves lives, but I do believe that there are many that start and truly believe that vaping is totally harmless and that they can chain vape all day as long as there is low to no nic in the juice and I dont think that is a good thing to believe