As we get older and our life experience grows....it just increases the range of possibilities for your wandering eye. The range just keeps growing. Now that I'm in my 40's...you can't help but notice the hotties in their 20's....and it probably extends all the way up to women near 50. When I was young, I never would've even given a 40 year old a glance....wrote her off as old. Which is probably what the 20 somethings do to me, when they see me. I try really hard not to be the creepy old guy. Anyway, now that you've been through the experience of child birth w/ your significant other, that group of women has now been added to your range. That's the superficial way of looking at it. I'm sure there's a whole other emotional bond connection that I'm missing.