There is no such thing as principle when it comes to FitFlop. These things made my feet so spoiled that I hardly wear flats, sandals, or flip flops unless I absolutely have to! I admit that I didn't understand why women would love such chunky, ungainly-looking footwear. The first few designs looked like platformed tsinelas, and they were sooo expensive to boot. I didn't get it. Until I got my own pair as a gift.
I love it because THE SOLE IS SO SOFT. It's like I'm perpetually walking on a cushion when I have these on! It was a little weird when I was breaking them in though. My feet kept slipping for some reason, but the rubber eventually softened and molded to the shape of my feet. Since then we've been more or less inseparable wherever appropriate.