Living over the world, I've come to appreciate footwear as both practical and in some cases a status symbol.
While living in one particular location, people has a phrase about flip flops. If they were hurting for money, between paychecks, they would joke that they didn't have enough money to buy a set of flip flops of the same color .... Implying their flip flops were from the junk pile.
Another time in said country we built a factory and equipped all local construction workers with proper PPE...personal protection equipment. Typically a hard hat, an orange safety vest, and steel toes safety boots. One month in and we had to halt construction for countless PPE violations - everyone was back to wearing flip flops - from the guys laying concrete to the guys 6 stories up the scaffolding doing the welding.
Turned out those boots were worth a couple months salary and no sooner did we give them out than they landed for sale in the local market ...
I just don't get the (pajama bottom and) flip flop wearing youth fashion. Looks lazy and impractical to me...
Comfort? My arches would be aching as would the space between my big toe and pointer toe.
Anyway, I like a nice shoe shine. Did it a few times at the airport for real bad cases... Usually just DIY.
Grandpa owned a shoe store - Paul Parrott and Buster Brown--- when I was old enough (5 maybe?) he taught me how to use all the wares- the tins of kiwi polish, a cotton cloth, saddle soap, mink oil, sole saver liquid, and an old toothbrush. Fond memories.