It might be of interest to you to review an article by Penelope Wang which was published in the January/February 2012 edition of Money magazine, p68-71, entitled "The Great Ideas About Stocks Are Wrong"
She explores the conventional, sacred wisdoms of investing and finally directed to that old favorite, buy and hold. Daily we are warned that investors can no longer rely on such an antiquated methodology. In fact, this author strongly hints, if not outright declares, the oldest may be the best even though buy and hold is disparaged by all the investment shows that you see daily. It appears that buy and hold ends up being the mother's milk of investing. To quote: "buy-and-hold is the worst form of investing, except for all those other forms that have been tried."
And failed.
She hammers the point home by stating that "... it's back to buy-and-hold. And when you dig into the numbers, you'll see that the strategy works, though the numbers might not blow you away."
Sadly, I was unable to find the internet link to the article. Try the library archives.