I chain vape. I am disabled (at 40) and unable to work. I sit at home, in front of the TV and the computer with a passthru and my bottle of juice and vape all day long. What I really like about vaping, besides the obvious being able to breathe, not smelling like smoke, coughing, etc and the obvious delicious flavors is the fact that I can vape when I want as long or as short as I want. I can take a puff or two and sit it down without wasting, like you would with an analog. When I was smoking, I would lite a cig and only want a drag or two and have to smoke the whole thing or waste it. I vary on the amount of juice I use per day. Some times its 2 ml, sometimes more, some less. But usually 2. I am getting some 0 nic to see how I do with that and if I do well with it, I will start ordering 0 nic in everything or making my own.