Sometimes part of being a consultant is taking the blame when things fuck up on the client side. Suck it up.I hold my cats in much higher esteem than I hold you. If a situation came up where I had to pick between harm to my cats or your death my cats would get chosen.
Genetics.By my late 20s I had moved to cycling. Nice, non-impact circles ftw. Part of my issue was years of skating (which I have not done in decades now). Agree good form helps assistive muscles but it's the soft tissue damage that's the issue. Knees and shoulders for me.