It's not clear to me that your experience was unethical. As parents are the legal guardians of kids, where is the responsibility -- to the adult, or to the child?
Your third paragraph is very hyperbolic and taints the otherwise reasonable points I believe you made.
I think you'd have to include a large majority of IT personnel in this figure, as they are the likely first line of support for many windows installs.
That number is probably much higher than 1 million.
Apples to oranges, of course. The interesting part is that MS scaled their support to include people paid by their customers directly because their software was so business critical.
Things that I found that worked: exercise for pleasure (riding my bike!). Connecting with people (one-on-one -- i'd always been part of a big group before). Learning new things, new challenges. Yoga.
A book that helped me a lot was Frankl's "A man's search for meaning". I realized that I had a bit of fight club nihilism in me because I never chose my purpose in life, and so was just sitting on the metaphorical treadmill of existentialistic wallowing.
Your third paragraph is very hyperbolic and taints the otherwise reasonable points I believe you made.