I have no kids, but if I did I certainly wouldn't/couldn't homeschool them. I could do pretty well with English, history, social science, philosophy and science...but anything beyond trig & geometry is out of range, math-wise.
Phaedrus, there are many, many excellent "programmed texts", as they like to say, out there. They are designed very well. Some have a "hotline" available that is part of the purchase price of the material. Like Martin said, there are many flavors of homeschooling: from the rigid "school at home" model where kids have assigned times for "classes" to the more free-wheeling "unschooling" approach (of which I am huge fan), and everything in between. The co-ops are very popular.