If we accept humans are evolved to devote most of their energies competing with other members of their society for status, it makes sense that we will never be truly content. For those humans who were too easily satisfied were at a evolutionary disadvantage and weeded out, as reproductive opportunities were limited to those who with the highest social status (if we discount the strategy of rape, which is basically a fringe form of competition).

So in that light, it's pretty obvious that almost every men in modern society will experience what's commonly known as a midlife crisis. For sooner or later, their evolutionary trait will propel them to seek more status and therefore mating opportunity. (women do not have midlife crisis because they do not gain any significant reproductive advantage with multiple partners)

In this predominantly Christian society, it's easy to forget that monogamy is actually a fairly recent invention. Almost all successful men have multiple partners, if not all at once, then serially.

So what's the point of this post? Well, obviously I am interested in hearing what others have to say on this subject. It should be pretty obvious that neither the usual Christian morality nor the trivial "what's natural is obviously good" sort of justification is what's looked for here.