This wasn't the first, but the straw that broke the camel's back was when I worked with autistic/special needs children. I was severely underqualified (and in hindsite the entire portion of that industry is incredibly sus), and I felt like I was part of a scam that didn't provide necessary services for this child. They were poor immigrants and my company was the only one they could afford. (I never asked, but I was pretty sure it was state subsidized as well). That job was technically "health care" work and I realized that the pay-for-play healthcare system we have is mainly a tool to deny healthcare and keep better options exclusive to rich people. Not long before I realized that everything for profit was based on denying access to poor people and the US was just a facade to maintain that structure and nothing else.