Or as natural as it is for sperm to swim into latex or spermicidal foam? ;-)
The thought occurred to me, "Why am I doing this to myself? Why am I putting stuff in my body I wouldn't put in my compost pile? Who is the "enemy" against whom I am urged to use all this chemical warfare: my own internal wet wonderland, which ought to be kept as pristine as any of the waterways of the world?? My own clever, cunning and ingenious sexual anatomy, which is just fine and functional, thank you, but here I'm trying to sabotage it? My potential fair children?
I think it was a hearty appreciation of my own embodied self, and a whiff of disgust against contraception, that helped turn me away from superficial passing-fancy sex and turned me toward the Almighty and His designs.
God my Savior! Funny how grace uses anything.