Because Google still tracks me. With Google, even as a customer you don't stop being the product. That's the only reason stopping me really.
I’m having a good time with nebula for educational videos. It’s not great, but it’s good enough and it’s very reasonably priced.
Here's a dead simple suggestion that would help increase viewing time for me at least; if I queue up X number of different videos, don't just base autoplayed video suggestions on the last one. Look behind and base it on the other videos too. That would make for much more diverse viewing instead of just falling asleep to the same topic/channel over and over.
And to my view, when you are the largest player, by far the one with the biggest market share and you exploit children weaknesses to make some more money, well, then you are the lowest form of life on earth.