Do you
vape unflavored because of health concerns or because you got used to it and started enjoying it?
I and many other ECF'ers vape unflavored much of the time. It's quick and easy to mix PG, VG, and Nicotine for an unflavored base. When I want a flavored vape I just pour up some unflavored and add flavor(s).
I once bought flavors premixed from vendors. When I started doing DIY I'd vape unflavored often. Depending on the PG and VG mix ratio unflavored juice can be slightly sweet or not so much. More PG adds throat hit. More VG enhances sweetness. I usually mix 50/50.
I mix several 100ml bottles of unflavored when I mix. Some of that mix gets flavor, but most stays unflavored.