I've vaped clear, unflavored 50/50 juice for a long time when I was broke. It has no taste, but after using it for so long I'm almost disgusted by it for some reason.
I gave 50ml to a friend because he is partially frugal and he seems to enjoy it.
People do vape it, some really just use this "hobby" as an actual way to quit smoking cigarettes and avoid all frills involved with vaping culture. That includes trying new mods, atties/tanks, and juices.