If real cigarrettes disappear, e cig will disappear too because e cig are made for nicotine addicts like us, and e cig are not recommended for people who has never touched a real smoke.
I agree with that, but there is also the area of physical versus psychological and emotional addictions.
People don't start smoking just because...they always have a push towards it. It can be pure curiosity or escapism, stress relief, prior peer or family usage and I'd wager that sometimes people are just bored.
I know the majority of my habit is just that; habitual. It's relaxing, it goes perfectly with drinking whether it's coffee or alcohol and is handy when I'm on the computer for long periods too. I don't smoke socially because I don't really socialize anymore. I know this will sound bad perhaps, but as a middle-aged bachelor on a fixed income it's one of the few small pleasures I have.
Vaping isn't all that new, but it's mainstream appeal is. At least in the USA, tobacco is just a source of political ferver, tax revenue and ongoing profit nowadays. It's a win-win as the Gov't and Corporations can play with the antis and the pros and make money off both sides. The more they spend on anti-smoking campaigns, the more it's hated and the more the people will allow it to be taxed. It's bloody brilliant.
Now, while vaping not only fills all of those needs and wants, it provides something far greater: a genuine hobby with a built in social group.
Sure, some folks collect lighters or debate RYO stuff...but IMHO, it's not a true hobby like Vaping is. We have the endless technical side of the PV's themselves, the multitude of flavors that smoking will never have, and of course, the health and cleanliness benefits.
Humans like having the routine, the initial "cool" factor socially, and the relaxation of smoking. Vaping provides all of that while not causing damage to the user or others. It is the smart choice.