It makes sense that books on reclaiming masculinity are secretly sought after by millions of men from all walks of life these days.
Man's role was once clear-cut and rigidly defined. It isn't that way anymore.
We're in an awkward transitional period in which:
1) Resources aren't nearly as scarce as they once were
2) Therefore, women are not as dependent
3) Feminism has become a permanent stain on the fabric of society
4) Society's growing acceptance of homosexuality, "metrosexuality," and the effeminate man is slowly overshadowing "macho" stereotypes.
5) Human sexual expression - although more openly embraced and flaunted in today's world than previously - is still shrouded in a thin, translucent veil of shame, guilt, and confusion. Many men don't know how to honestly express their sexuality without feeling like a "creep" or "pervert."
6) Morality and ethics are being thrown out the window in favor of air-headed relativism. Once, men were expected to know right from wrong; left from right. Now, it's just kinda "whatever you feeeel, man." Believe it or not, this can creates spineless, manipulative cowards who don't know what to stand for or why. So they bullshit, backpedal, and white-lie their way through life while secretly thirsting for solid ground on which to stand firmly upon.
7) The rate of fatherless children is skyrocketing as well as divorce resulting in a deficiency of healthy paternal influences in young men's lives.
There's dozens of other factors that tie into the Western man's thirst for a solid model of masculinity.
Personally living up to some idealized standard of manhood has never been big on my agenda*. As long as I can think independently, make ends meet, and not compromise the few fundamental values I do have, I've passed the test.
*I will admit I have found some helpful gems of information from men's self-development and dating advice (90% of it is bullshit BTW).