Why doesn't healthy food taste good?

Here's another piece of helpful information if you're new to the world of health and fitness: some health foods require an acclimated taste. For me, it was the taste of plain green tea. I had to find a kind of green tea I could drink without adding anything to it. From there, I could drink all teas without adding sugar or honey.

Lipton Green Tea with Orange, Passion fruit and Jasmine

I'm now trying to get used to the taste of plain oatmeal, plain Greek yogurt, kale and quinoa. I find that adding berries to both yogurt and oatmeal is really helpful, but I've yet to have plain quinoa or kale without making a grossed-out face. Any suggestions are welcome.