Lazy?
I think one of the mistakes starting out is buying a bunch of flavors with no idea what to do with them (yeah, I did it too). It helps if you can find a few recipes for clones of juices you already know and like.
buy the flavorings just for the recipes. See how they taste compared to the original, and play around from there. It helped me get an idea of what flavors were really doing what, and a
sense of how much to use. After that, either stick to the recipes you know you like (mostly what I did) and/or slowly expand from there. But I think even buying a "starter kit" is a waste, as you'll have two dozen flavors which are unrelated to your particular preference.
And yes, if unflavored works, you've got the easiest prep possible. Then you can become a nic snob and compare different company's nics to see which has the best flavor, and instead of a drawer of flavorings, a freezer full of different brand nicotine. Sorta like vodka.