If I am going to hand over the majority of the daytime child care to somebody else I at least want to know they have the intelligence to pass a few exams and know the theory behind the work they do. I don't want to deprive my children of my intelligence, qualifications and life experience and leave them with somebody who can't teach them half of what I could. What would be the point in that. (I say this partly tongue in cheek but not entirely).
LittleBearPad makes a good point about professional qualifications. I would add to the examples, teachers. Whilst I am all for people with a natural talent becoming teachers, I still wouldn't want somebody without training to teach my children in the long term. Apart from anything else a qualification give us a yard stick to judge potential by and provides both sides to objective measure of the standards that need to be met.
And I thought the proper rich all had Norland nannies with dinky little hats and nice white gloves.