I find it odd how so many men prefer BBBJ to vaginal intercourse. If all men thought that way our species would become extinct pretty quickly. I think a BBBJ feels better than sex with a condom on, because you can actually feel her wet soft tongue on you, but I think bareback intercourse with your wife or girlfriend feels even better.
I may know the answer
You have to understand how the pussy works
Females have more erectile tissue than men which consists of the following:
1 The clitoris has legs that run down both sides of the pussy. The clitorial shaft connects the clitoris head to its legs.
2 The G spot. Dr Gragenberg was wrong in calling it a spot as it is tube shaped. It is the urethral sponge which surrounds the urethral canal. The Skenes gland inside the sponge creates female ejaculation
3 Vestibular Bulbs - they run inside the clitoral legs and extend even further down the pussy than the legs. When stimulated they will cause the pussy area to enlarge. Play on the outer lips will achieve this and is the best place to start arousal as it lies on the outside of the yoni-verse.
4 There is also the perineal sponge that lies in the perineum
When all the female erectile tissue is enlarged if creates a tighter fit for the penis AND because there is so much of it and in different locations it takes longer for female arousal
I also believe some of evolution is by chance and cannot be explained by Darwinian methods