That's right - no one says that - the problem is people who use that fact, to make everything "dangerous". Because no product is 100% safe - mainly because idiots find ways to harm themselves, then some think that even 1% unsafe = a cause for regulation.
And because no product is 100% safe, individuals have to weigh the risk/reward - the possibility of particles from dry hits vs. the benefits of nicotine. The need for taste in eliquids to stay away from cigarettes vs. the possibility, even though no evidence in either cigarettes or eliquid suggests it, that diacetyl may cause harm. The enjoyment of big clouds vs. the enjoyment of flavor. The need of nicotine via ecigs vs. the harm caused to conditions - asthma, COPD by continuing to smoke. There are many other personal reasons to long to list.
This 'risk/reward' assessment for ecigs, fortunately has no effect on someone else's rights, so it is a personal choice only. Those who don't like diacetyl, big clouds, don't have asthma - can choose according to their preferences without interfering with any others. Only when you have people who know what's best for others and want to push or support gov't regulation, are choices then diminished - at least with ecigs. If it's a product that can affect other people - that's a different story.
When it's not the case that it affects others - as with ecigs - then those who still want to push toward regulation and intervene in others' personal choices - then they have to make that 1 or 2% risk so dangerous, either by using the children card, or using junk science, or some other form of fear-mongering in order to pursue their fake altruistic goals that make them feel good and almost no one else.
This gets right to the heart of why I vape: BECAUSE OTHERWISE, I WILL SMOKE! I'm well aware that vaping can be problematic for asthmatics -- I deal with those problems every waking minute, because if I just think, oh this is too dangerous, too much trouble, etc... I will go right back to smoking. Maybe smoking didn't cause my asthma as many problems... but guess what smoking can, and nearly always does, lead to? I think we all know the answers to that. I have even less business smoking than vaping!
I have my own personal reasons for eschewing diketones, which aren't too much because of their potential risks, but my own neurotic tendencies... but I must have strong, sweet flavors if I'm to stay happy with vaping. So I've taken the time and trouble to find ingredients that I don't think will trouble me too much -- risk/reward.
I also had to deal with the risk/reward of WTA -- it very well might be more carcinogenic than plain nicotine, and it might be one of the causes of some of my asthmatic problems... but without it, I would never have been able to stay smoke-free. Risk/reward.
It's part of life; the ability to weigh it cautiously and make good judgements is one of the foremost indicators of maturity and intelligence.
Andria