A standard argument for the Vatican doctrine that the sole purpose of sex is for procreation, is based on the assumption that all other forms and purposes of sex are not found in nature, and are therefore unnatural, and contrary to God’s purpose. There pictures clearly demonstrate the contrary.
Same-sex intercourse, sex in threesomes, masturbation, and oral sex all occur in nature, have been described in the scientific literature, and are illustrated here. Primates also use sex toys, making dildos from vine stems and masturbation aids from fruit (pictured here).
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- Sexual Nature Exhibition(Natural History Museum)

Whoever said: two’s company, three’s a crowd?