i vape single flavors all the time out of sheer laZieness
im not hard to please and enjoy it most of the time
whenever you add more flavors you also take away certain flavors
as for sweetener, i don’t add any to bakery’s but lately I have been adding some ricks sugar daddy to fruits instead of supersweet and im liking it alot
I have a similar story… Until our resident SFT’ER sold me on doing reviews, I only vaped a single flavor once or twice in 5 years. But now I have been running 10ml testers completely empty- and wishing I mixed up a 30 instead.
Super crazy- and yet super awesome. ANOTHER thing… Some of these flavors are sweet enough where you don’t need any added sweetener.
Good luck brother!!
Edit: Added Text
ANOTHER thing I was thinking about… When we have a “little” knowledge, we become dangerous. Not in a bad way, but in a overconfident way… Looking back at some mixes and thinking “Why TF doesn’t this taste great?!” And now knowing you don’t add 7 different vanillas to a mix and hope to get the a blessing from the Vape Gods.
I hope that makes sense. 
I vape quite a few single flavours. CAP VCV1, INW Custard, FA Custard Premium etc. I never use any sweetener in either single flavours or mixes. Just my thing, don’t need the added sweetness.
Don’t get me wrong, I have tested single flavours. But then it is only 10ml at a time and after testing, I go all out and put them into a recipe (if I like them).
I have so many flavours that I bought because I thought they sound like something I want to play with and ended up never using. But this thread made me think that I could just as well start hitting them ad single flavour mixes and start clearing out my stash a bit.