Amen to that, MaryKay!
I vape around... started with 18mg French Vanilla and 24mg of tobacco flavored a couple of months ago. Got one small bottle of 36mg "just in case" juice in my second week with some DIY mixing stuff because I had no idea what I would like, and I made a bunch of 18mg, 12 and even some 9mg flavors. But I found myself dripping the 36 in extra-stressful moments. I went through a little less than 1ml of that per week, have mixed another small bottle. Haven't wanted it very much lately, but, I also started vaping a lot more 24 when I got some cartomizers a couple of weeks ago... and I think I'm starting to vape a little less now. I usually have some of my lower-nic juices during the day/evening also. I like to change flavors a lot, there are some flavors I like so much I don't care what the nic level is. I have even liked a couple of 0mg juices, but I am not very interested in them right now. And I am trying to stay away from tobacco flavors, although I still have some cartridges left from the starter kits.
So it can vary, for sure. Everyone has to find their own level, and it may change along the way.
I also hope to get down to 0mg eventually, so that vaping can be just something I enjoy occasionally and not something I really "need" to do, or go nuts without.