I agree with your assessment of the problem -- it's the environment. But, as long as millions/billions of dollars are on the line then there will always be those who put all their time/energy into their job.

Maybe it's biology that allows men to lead less balanced lives; mabye it's culture. But the effect is what we have today -- when living an unbalanced life is rewarded handsomely, men dominate.

I'd like to hear counter examples.