Biologists are beginning to demonstrate that certain parts of the human body are just poorly designed -- such as a knee joint that doesn't support our weight very well. (Compare how long a horse can stand.) We are this way as a result of our evolutionary history -- what Dawkins calls "The Blind Watchmaker."
Our memes can be poorly designed, too. They can be relics of a time when they were more useful. For example, a hatred of homosexuality is often manifested as a hatred of sex for pleasure. They believe that sex is for procreation, not recreation. (No abortions, no birth control, no homosexuality, no masturbation, etc.) This meme may have been useful when the human population was very low. But with over 6 billion people on the planet, things are different.
Let us jettison the sexual meme "sex is for procreation, not recreation." Today we need more happiness and fewer babies. Unlike our knee joints, we can chose to change our beliefs.
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