I would respectfully disagree, though, about the need for formal training. There are other, far more important characteristics for a parent to have, such as love, maturity, and plain ol' grit, in order to homeschool; parents need to have sound judgment and a good understanding of themselves (helpful to really any parent, whether their kids are in public/private/home school). I've just met too many smart, intelligent, wise people with very little/no formal education, and very immature, common-sense-lacking people with massive post-graduate degrees, who broke down my misconceptions about the need for formal educations.
There are so many amazing resources for the homeschooling parent -- we are more fortunate in that way than just about any other cohert of people in history. Heck, I taught myself to read before school started, even in the home of an enlisted military guy and his barely-english speaking wife in base housing -- just because of my access to just a few resources in those tender years.
I think the bottom line is freedom. Guess what, ladies, you have so many wonderful choices that your sisters before you never dreamed of, except for perhaps a few visionaries. For those who feel "peer pressure" to homeschool - get over it, grow up, and find new friends (I know, I know, you can't just find new family readily, and they can be a challenge); for those who feel "peer pressure" to NOT homeschool -- again, you should have control over your response to those forces. I think, overall, the regulatory and institutional risks that are still facing homeschoolers, aren't facing public school parents (e.g., intrusive government, NEA).
Just a few thoughts.