and, of course, making it appealing eventually appeals to non-smokers and it can become fashionable like smoking was.
You can bet that PH are keeping a very close eye on this. To date, there is no evidence of this happening among adults or children at all. For those who have not previously become addicted to smoking, vaping doesn't appear to be getting anybody hooked. ASH's factsheet on nicotine and addiction examines why this might be.
And the big tobacco firms eventually take over the little suppliers, anyway.
Well gee, thanks for your pessimism. SME vape businesses have been holding their own very nicely up til now and dominating the market. Over regulation will most certainly make it harder for them to do so. Do you think this would be a good thing?
And those people who do not want to breathe in other people's vapes have to wait for 50 years for the proof that inhaling something unnecessarily is actually harmful for non-smokers who had the right to avoid the entirely unnecessary harm taken away from them.
You haven't had any rights taken away from you. Vaping has never been banned, it has always been up to individual businesses to make their own rules. Why do you persist in classifying vapour with smoke? We have known for ages that inhaling smoke from burning stuff (ANY smoke from ANY burning stuff) is bad for you. Vaping is simply not in the same category.
People got used to not smoking in enclosed, public spaces.
People, including vapers and smokers, are still used to not smoking in enclosed public spaces.
This is just finding another way to inflict unnecessary discomfort and possibly long term harm on others, because vaping addicts do not personally find it unpleasant or antisocial.
Yes that's all it is, just another way we've found to piss you off, obviously 
I am so glad that public health in this country disagrees with you so strongly.