This is not true for everyone. The only reason I vape is to replace my addiction to cigarettes. I wasn't on a mission to find the ultimate vaping experience as far as taste, th and vapor I just wanted something that would be at least as good as the taste of a cigarette, satisfy my addiction to nicotine and provide for the psychological addiction of "hand to mouth". Which, when you think about it is not setting the bar very high. I'm not a fiddler or collector by nature. I got lucky and did my research on ECF and before I'd collected a bunch of gadgets that sorta worked for me I found a PV that holds a charge for two full days of vaping and a carto that holds enough juice for a full day's nicotine fix. Now when I go out for the day I take one device in my shirt pocket and I've shed myself of a pack of smokes, a spare pack of smokes, a lighter and an ashtry.
The e-cig industry is in it's infantcy right now and unregulated. This causes manufacturing to use what is called "the spaghetti approach". Throw everything at the public wall and see what sticks. Rapid advances in the evolution of the e-cigs are happening and there are new devices out there that provide for one device to cover all day smoking satisfaction.
I predict that in ten years the majority of tobacco company's sales will be e-cigs. You will buy a device that looks like a pack of cigarettes but is actually a pcc with two 1500 mah batteries that look like cigarettes and 5 prefilled cartos that will equal a couple packs of smokes. You will buy refill cartos of your favorite brand. It will be highly regulated by the FDA and taxed by state and local government. Mixing your own juice will be an anomaly. Enjoy your toys and juices for right now, as we are living in the golden age of unregulated, anything goes, vaping.