Most long time vapers would disagree with your conclusions, at least for the majority of vapers. You cannot get the same consistency or warm vapor from a 3.7 volt PV with LR attys as you can with a good 5 volt or VV model.
Once the OP trys a good 5 volt model such as the GLV 2 or a good VV model such as the Darwin, the reviews from others who made this switch, support the strong guess, that he will no longer be satisfied with just 3.7 volt vaping.
Well I disagree once again. To begin with, "long time vapers" is an ambiguous term. Compared to what? Know anyone that has vaped for 20 years?
Did you buy a different brand of cigarettes every time you went to the store? Or just like the rest of us, did you smoke the same brand day in and day out?
Personal opinion of course, but in time, a person that vapes will evolve to that same point. They will just vape, and not even care about the latest & greatest that hits the market.
You tend to forget that the vast majority of vapers use a little Volt, or 510, or eGo type device, and will never go beyond that because it satisfies their needs. Most will never post on this site, or even care that this place exists.
Why do you think the vast majority of smokers opted for cigarettes instead of a pipe or cigars? Do you think that size and convenience plays a part in that? Why would we think that vaping, in time, will be any different? I would suggest that simplicity will win out with most people.
If my observations were just mine, you would be correct. But they are not. There are hundreds of posts from vapers who moved to 5 volt and VV vaping and found it was much better than vaping at 3.7v.
Yes there are hundreds of posts supporting what you say ............. by the same couple of dozen people.
Now understand; I too have a VV and a 5v device, but where I disagree is they are not "better" they are only "different".
Personally, I like to vape at 8 +/- 0.3watts, which is easily done at most any voltage I choose to use, including 3.7v. A Darwin is not the only way it can be done!