@SmokeyJoe those reasons + the mellow feeling it gives to an extent.
@lamarrk I agree. vaping is definitely a way (probably the best imo) for people to quit smoking. I will say the regulations that governing bodies are trying to enact are hindersome, but they are correct in the fact that there needs to be some regulation (in terms of what is safe to add to juices) and proper research (not some of those ridiculous inaccurate tests of recent) done to see definitively if there are any long term consequences.
After trying cold turkey, hypnotism, patches, nicotine gum, wellbutrin, and chantix, I was successful with quitting after 43 years of smoking, when I started vaping. I was smoke free from day one. The combination of the hand to mouth routine with the simulation of blowing smoke is a big reason, along with the noctine.