Quote:
Originally Posted by nomad2211
I was also under the impression that we are one of maybe 2 or 3 animals that has sex for pleasure....it would seem if they are all having gay sex that I am wrong in that as well.
True or False?
Well according to
snopes the "only 2-3 animals have sex for pleasure" claim appears to be true. But in order to reach their conclusion they excluded homosexual and masturbatory activity from their definition of "sex for pleasure" which makes their analysis a joke imo.
Using the first definition of pleasure found at Dictionary.com: "the state or feeling of being pleased", I would argue that at least all sentient creatures have sex for pleasure. AFAIK, humans are the only animals on earth that are even aware that sex leads to offspring. If other animals aren't aware that sex leads to babies, then why are they having sex? I would say because they find it pleasurable. And the reason why they find it pleasurable is because, like us, they have been programed by billions of years of evolution to find sex pleasurable.
Imagine a continuum of sexual pleasure gradients and assume genetic variation in any life form population. Naturally some animals will carry genes that predispose them to like sex more than others, and thus they will be more likely to have sex and reproduce than others. Run this simulation for billions of years and you're gonna have a planet filled with sex-loving animals as we do today.
Now the next question that begs to be asked is, "Ok but what's the evolutionary explanation of homosexuality?" Wouldn't individuals predisposed towards homosexuality tend to weed themselves out over time since they're less likely to reproduce? To answer this question we first have to get a couple things straight (pun intended).
Number one, evolution isn't about the reproductive success of individuals, it's about the reproductive success of genes. Individuals are simply gene carrying vehicles. Individuals die off while genes are theoretically immortal.
Number two, thinking about homosexual men for a moment, don't think in terms of "gay genes", think in terms of "guy loving genes". While it is reasonable to assume that men who inherit these "guy loving genes" are more likely to be gay and less likely to reproduce, that is only half the story. Woman can inherit these "guy loving genes" too! Now we can formulate a testable hypothesis:
If these "guy loving genes" exist then female relatives of gay men should be reproductively more successful on average than females relatives of straight men due to the fact they that the former are more likely to carry the "guy loving gene" also. Such a study has been done and the results supported this hypothesis.
"Andrea Camperio-Ciani, a professor of ethology and evolutionary psychology at the University of Padua, interviewed 98 gay men and 100 straight men and found that the mothers of gay men had an average of 2.7 children, while the mothers of straight men averaged 2.3."
Now this doesn't explain the whole story. More evidence needs to be gathered before any strict conclusions can be drawn. I'm just trying to show you a plausible mechanism for how "gay genes" have been successful in the overall gene pool for probably hundreds of millions of years. Females carrying these genes make up the reproductive deficit of males carrying these genes. Assuming repeated studies show the same trend, then the paradox of why "gay genes" don't go extinct has effectively been solved.
Some good articles on this topic can be found
here and
here.