I can understand the reason to vape unflavored, but as stated above, it is generally pretty bland. Not bad, not good, just bland. One poster compared it to a light cigarette, one of those kinds with a zillion holes in the paper. At least vaping unflavored gets you a little vapor, bland as it is.
I started like a lot of others, looking for the perfect flavor, the all day vape, all that good crap. Still would get tired of most of them, switched to DIY, on and on. What worked the best for me was light. Light flavors.
Don't want to be beat about the head with the best of everything. Now when I mix I only put, depending on the flavor, between 1 to 5 drops per 10 ml of unflavored. Just enough to make it taste better than a bowl of plain oatmeal but still not having to pick my tongue up off the ground.
I also get the feeling that if we live in the unknown with our flavors, at least I'm pretty safe in it all.