I agree with you. Even if women live on average longer than men, having ten or fifteen more years on the bench for a conservative is very, very important.
From an actuarial standpoint, I wonder how long single, never been married women live on average. Anyone know?
Don't know for sure on men and women, but the average life span in the US is 77 years, and IIRC the gender difference is about 6 years. However, the average life span for those who live to age 65 is now 82, again skewed higher for women.
http://geography.about.com/library/weekly/aa042000a.htm