Ok. You see a paradox in condemning the use of reproduction organs for non-reproductive purposes while at the same time not condemning the use of vocal cords to sing a song?
I said “the mouth” to be specific. (I have no objection to any of the body’s organs,internal or external, being put to multiple uses, whether they further pro-creation or not.) I cannot imagine a God that denies non-procreative pleasure, provided that it is consensual and non-abusive or obsessive (a matter of degree). There is no biological imperative that every sexual act be possibly pro-creative, no “natural law,” no design imperative. That a mouth or vocal chords CAN produce song does not mean that they should do so
exclusively; same with sexual organs. We know that sex is pleasurable and bonding (generally speaking), and both pleasure and bonding reinforce each other and are positive qualities. Pro-creative possibility is not
necessary for either pleasure or bonding, and both of these facts, mutually reinforced, are positive for biological survival, whether the sex is ever procreative or not. Pleasure is the basis of the human bonding from birth on, and is done through or sensory organs. Later in life, that pleasure also develops in erogenous zones and enhances the bonding in mating pairs. This, generally speaking, enhances reproductive results as well, but reproduction is no
definitional requirement in the bonding process, nor in the survival of the couple in question. Procreation is not the ONLY function nor ONLY purpose in the erogenous zones of our bodies. To claim that these zones of our bodies should ONLY be put to use in service of the making of more believers in God is a very strange and illogical argument, especially when you also argue from “design” function. “Function” and “purpose” are separate, but associated, issues.
Technically speaking, our hands, then, also are morally free to manipulate these zones and organs to the point of orgasm. After all, they were all designed within reach, and even children find this pleasure out “naturally.”
And the penis has more than one biological function as well. Just saying…