Betty White

I always wanted to be a zookeeper when I was growing up, and I've wound up a zookeeper! I've been working with the Los Angeles Zoo for 45 years! I'm the luckiest old broad on two feet because my life is divided absolutely in half - half animals and half show business. You can't ask for better than two things you love the most.

I know more about what it's like to be elderly and infirm and kind of stupid, the way you get forgetful, but on the other hand I'm a littler, wiser, dare we say? The word 'wisdom' has kind of faded out of our vocabulary, but yeah, I'm a little wiser.

On the other end of the spectrum, these women who do live long enough to collect Social Security face the challenge of being disproportionately dependent on the Social Security system for retirement income.