To put some data behind a remark in the previous post about young girls' intolerable flakiness, and to temper the enthusiasm on this blog for young girls, here's a study that Jason Malloy of GNXP.com pointed me to: Wife killing: Risk to women as a function of age (PDF). Scroll down to PDF p.4 and see Figure 1, which shows rates of wife killing by the wife's age. No surprise there: a wife's risk of being killed declines geometrically as she ages. Since killing your wife is like "going postal" on your boss, this makes sense -- the rejected person is more likely to get enraged if they've become accustomed to high quality rather than low quality.
Next, go to PDF p.7, Table 1, which shows rates of wife killing by both her and his age. As per usual, I'm only concerned with young females, so we're just looking at the first column, wives under 25. It makes no real difference to her if the husband is in her age group or if he's 25 to 34. However, her chance of being killed by him doubles if he's 35 to 44, and is nearly two-and-a-half times as large if he's 45 to 54. Still, on an absolute level, we're talking about a 4 to 8 in 100,000 chance in most cases.
This also makes sense -- the 45 to 54 guy has proven that he can get a much younger wife, but it surely was a lot tougher for him than for a guy her own age, and the search for a suitable replacement will be just as tough or tougher. When two employees are fired from a high quality firm, the one who faces far greater difficulty in getting hired by a similar firm is the one who will come back to blow up his workplace.
Anyone who's been around, dated, or been with young girls knows that the highs are much higher than for older women -- by leaps and bounds. At the same time, because they're so valuable, the sting of grief is greater after losing them -- even a simple blow-off after the first date -- compared to losing a lower-value woman.
Perhaps this is part of the greater uxoricide rate for younger wives: to get over an older woman, you can effortlessly brush her aside as a deluded old hag, but the young babe is so adorably disarming that to get over her, you really have to demonize and dehumanize her. Otherwise, it's hard to avoid the fact that you just lost big time, regardless of your prospects. And that demonization makes it easier to go through with violence if the thought enters your head.
Again, murdering your wife is extremely rare even in the worst cases, so you -- and she -- probably don't have to worry about that happening. Still, it represents the tail of a distribution of behavioral responses to relationship downs, so on average you probably will have more pronounced lows with a younger girlfriend or wife.
Is this extra grief worth the higher highs? It depends on how much of a risk-taker and excitement-seeker you are. So I'll officially add a "your mileage may vary" disclaimer to my praise of young girls, but I doubt that any play-it-safe guys were seriously thinking about chasing them anyway. Indeed, a recent study found that a man's preference for super-girly faces was positively associated with his testosterone level, and this will pick out the more risk-taking men.