What is a healthy food you just can't gashlight yourself into liking?

While growing older I've realized that there is a lot of "healthy" food that I didn't like that I could just cook a certain way, or simply eat enough, to the point of ending up liking them (or at least not hate them as much). I'm thinking about a lot of different vegetables, beans, or even unsweetened tea (I haven't put sugar into my tea since 2010).

But for the life of me I just CANNOT eat dark chocolate. The 70% stuff? Disgusting. Tastes horrible. I hate it. So bitter. Even the one with fruits and nuts or alcohol in it, I just can't. I tried so many times to just eat it, thinking that surely I would understand that it is the tastier version of chocolate... but it didn't work. It's milk/whote chocolate or nothing. The more sugar the better!

What's yours?