What were leather, then shaved leather, then vinyl, and now shaved vinyl. My Asics $60-70 pair last about 9-12 months. In the 1990s they were thick vinyl and lasted almost 11 years.
With the emphasis on short life span has come thinner materials and fabric. They lack the support of past shoes. The soles cushion the down stroke but not the movement. Older people with flattening feet - which is to say everyone - are now flattening at a faster rate. We're going to look like goons in 10 years.
Even high end brands are doing it. In Kohl's recently, only Nike tennis shoes had all vinyl construction. And it's 1/4 thick of what it was in 2000.
Last time I looked, and I better hurry to the store, only Italian Fila had decent construction. Italian shoe manufacture goes back centuries. They're late to remove leather too. Better stock up if I find what I want.
Even gel insoles are featherweight from what they were.
I'm ok with walking shoes, dress shoes - Rockport, but they can no longer be resoled.
Mens' weight breaks down these feather weight shoes even faster.
Some say get some Nike premium running shoes - like the $180 pairs. Have to go to a real store like Dicks to even find them. Famous Feetware won't suffice.
Will tuck your back pain ideas away in my head to test gel inserts when I get some new wheels. Thanks for the OP!