I love the elegance and sophistication of thin stiletto heels. I find them slimming and make legs appear longer. Practically though, I spend most of my time in flat ballet pumps and sneakers.
I prefer thick heels to thin one. However, I usually wear flats. It is easier for me since I am on my feet most of the time and wearing heels is really very painful. But, if I wear heels then it is usually very small and thick. I have never worn a pencil heel.