Actually the response to "How are you" is out of conditioning and habit. We are just used to of responding it with I AM FINE. Moreover, we are likely to share our problems with everyone we meet.

Hmmm about strength of women, I think, the strength of men and women lie in different domains. Women are more skilled at managing multiple tasks together. They are stronger at bearing the emotional upheaval brought by infidelity or break up. On the other hand, men are stronger in physical area and face multitude of hardships in the world outside the home.