I'm with Medusa... grapefruit is vile. And Phred, my grandmother used to eat it with a grapefruit spoon - serrated at the tip, just like the photo in your post. I'm not a fan of citrus fruit in general. I'd rather have a mango, thanks.

Only one person mentioned medication interactions so I thought I'd bring it back up (I'm a nurse). Here is a pretty detailed list.
http://www.mayoclinic.com/health/foo...rition/AN00413