Lillie, If the experts truly taught like what you are suggesting, I think it would be a valid concern.
My experience was that there was very little teaching going on that one could not gather yourself, from the textbook. It was like this from gradeschool through college. The teachers I had who did not teach like this stand out in my mind to this day.
I would agree that, at some point, my own educational limitations will crop up but I think that the well-roundedness (weren't we just talking about this earlier??) of a home education will make up for that. IOW, I can hire tutors if need be, or do as MrsNOP said and take a more hands-on approach with library materials and field trips and spending as much time on the subject as she and I need.
Also, what do you make of the statistics that say that homeschooled children are academically above their peers? Despite not having 'experts' teach them, they are achieving at higher levels; I'm curious what you make of that.