All very true! Also, women living longer than men could well be due to them going to the doctor more, and not strictly biology.

There was some Discovery Channel show I watched on gender differences a while back that connected gender differences in lifespan to childbearing, with modern women's increase in life expectancy tied to birth control and smaller families. The clincher as I recall was looking at the ages of nuns in past centuries as compared to those of other women and noting that the childless nuns lived longer than contemporary men, meaning that the current trend can't be solely linked to better health care nowadays.