I learned my “appropriate footwear for SF” lesson the hard way. When walking to catch public transportation to/from kid(s) homes high on a hill, always wear running shoes or Uggs, etc (something flat, with support).
Trying to “look good” wearing “fashionable” boots with “higher heels” on is not a good plan. They’re okay for walking around union square shopping and catching a streetcar and then boarding a bus up the hill but NOT okay for walking up and downhill in. They’re a recipe for a badly sprained (or even broken) ankle :=0