I'll choose just one point, hopefully the least contentious.
Your child isn't being educated by 'some stranger'. They are being educated by someone with the required level of educational attainment themselves. There is a robust regulatory framework in place to ensure this as well as to address issues relating to the physical school environs and the curriculum taught.
They have passed the necessary background checks and continue to do so.
Those chose to become educators, at time and expense to themselves.
I could go on but I won't labour the point