I guess its pretty different for everyone. I've been vaping on and off for almost 3 years, but 4 months ago I decided to give up analogs and started vaping a lot more. I rarely order large bottles, always samples or the smallest size a vendor offers, just because I found that I find most juices meh. Still no all day vape, wondering if I will ever find one. I've tried tons of samples. When I vape at home, I have like 20 bottles all over my desk, making a mess. A few drops of this, a few drops of that, I never really just stick to 1 juice, even if I like it more than the others.
I suppose the question is... if you found a really yummy juice, could you only vape just that? Still searching as well... but one thing I know for sure, is that I actually really like dessert vapes, while not a dessert person normally.