Does a big age difference matter in a Relationship?

When we see younger older relationships, such as the late Anna Nicole Smith married to someone who could have been her grandfather, or the older Demi Moore married to the younger Ashton Kutcher, we often think to ourselves "it must be for sex or money." But are those the only things about younger older relationships? Or is there more to it, something that defies logic at a glance, yet works so well for the couple?

By Rick Fulks