Do you mean like prickly pear cactus pears or like dragon fruit (the hot pink one with the black speckled inside)? I like eating the latter just'cause it's really cool looking.
I originally meant prickly cactus pears. I had them for the first time, you can believe this, on a topless beach on Greek island. It was a shock to me to be at the beach..then a local guy hiked down a 18% grade cliff near by with his basket of cactus pears. They were delicious.

Since then, I haven't found the ones in stores here satisfactory.

I love dragonfruit. Easy to eat, once one cuts through the soft pink skin.