[Wm Bach]

Yeah, think about it. Lemmings will drown themselves/toss themselves over cliffs when the population reaches a certain point. Sentience probably endows us with just enough sense for personal self preservation, but not enough sense to figure out that an exit is not an entrance.

Owing to the huge population, and dearth of women, I would imagine that, like a ship at sea or a prison, it's not very safe to bend over for the soap in China right now.

[Savage Beast]

There have been studies on overpopulation using rats. I remember that the alpha-rats emerged as preditors. I can't remember what, if anything, happened sexually. Do you know?

[Protagoras]

Owing to the huge population, and dearth of women, I would imagine that, like a ship at sea or a prison, it's not very safe to bend over for the soap in China right now.

I hate to bring it up, but anal sex is said to be very prevalent among hetrosexuals. It's another thing I don't hear much about among people who rail about anal sex. (I'm not implying that you do)

[BikerNYC]

Good point. I sometimes think it's a way to have relatives who are not child-producers help with the family's child-rearing. Kind of built-in nannies. They don't (typically) have their own kids to deal with, so they can be good uncles and aunts and help siblings out (I have one gay friend who constantly helps out with his brother's infant girl). This might provide some advantage to the group's overall survival.