I'm honestly surprised that vaping hasn't naturally killed off cigarettes already. I suspect it will eventually. You get to consume nicotine while eliminating maybe 95% of the downsides of smoking tobacco. Plus it's usually a lot cheaper.
Advanced vaporizers, which could successfully substitute cigarettes are even less convenient: replacement coils are not standardized, firmware is buggy, juice is leaking, settings are confusing etc. It's not rocket science but enough of a barrier for most people as it seems. E.g. my vaping setup is: a mechanical vaporizer (so no firmware issues), a charger and a set of 18650 IMR cells (you have to buy them online since they are not intended for sale to consumers), an atomizer building deck (an ohm-meter + power source to burn coils outside the vaporizer), all kinds of heating wire, tools to work with the wire, wick, juice. Compare to a cigarette smoking: cigarettes, lighter, ashtray (if you lucky to be able to smoke inside), all available everywhere and you can get by just with the cigarettes.