I spent a lot of time and energy raising my children, all of whom have become stellar adults
You did the one best thing you could do for your kids. You spent time with them. I think that, as much as anything else, contributes to success of our children. It sounds like your father believed this, too.
I was not trying to post a "brag rag" on my kids. Rather, I was trying to emphasize the lack of accountability in most public schools. My kids are just regular kids, held to a higher standard.
As far as the curriculum, many fine, accredited courses are out there. Christian courses tend to emphasize character building and moral values that are not taught in public school.
Antipitas has it right when he says there is too much interference at the Federal level. Those faceless bureaucrats, however well meaning, cannot know what is best for your child.
Accountability starts at home, with involved parents. Homeschooling forces kids to be accountable. It also forces accountability on parents. If you cannot accept this, then you should not be homeschooling.
I believe that public schools can work, with proper involvement of parents.