Crocs made it possible for me to survive my last six months of hospital nursing. I still wear 'em to this day, although I prefer the closed style since they're a bit dressier (and keep my feet dry when it rains). I wear an old pair whenever I work in the garden---there's nothing better than Crocs when you're mucking out flowerbeds or turning the compost pile!
I also like them because I am terribly hard on shoes and have to replace them pretty frequently, so Crocs provide a cheap and comfy alternative to more traditional shoes. (I can't wear heels or flat shoes with no padding or support......they make my back and knees ache ferociously.) In addition, they come in lots of fun colors, which is great in the summertime when I like to match my shoes to my bright, warm-weather clothes. And all you have to do when they get grubby is put 'em on the front porch and hose 'em down!

What's NOT to like?