With some exceptions (and of course, we each have our preferences!)... but MOST of us really should be wearing good shoes! My spine was curving and twisting once (way too much stress at the time...) went to see a rheumatologist (thought I was arthritic...) turns out my spine was out of whack. She said we're going to do two things: 1) You're going to go get some Rykas (shoes designed by women for women's feet... BEST shoes I've ever worn!!) and 2) physical therapy. Well, BOTH worked! I find that whenever I'm wearing poor shoes, my feet/back/hips/knees/toes.... it all hurts!
just do an online search: Ryka shoes... (I only WISH I had stock!!)