I just realized that you, as well as most of the population, do not know the anatomy of the clitoris. It is a large organ that is much more than the external part that most people think of. There are several YouTube videos that are very informative, if you're interested (I attached a few below).

The clitoris is the female equivalent of the penis. The vagina is the equivalent of the testicles. Similar to the way you won't reach orgasm only through testicle stimulation, women won't reach orgasm with only vaginal stimulation. That said, the clitoris is mostly internal which is what creates g-spots.

So I believe the problem is more related to a lack of education than the female anatomy being too complex.

https://youtu.be/WDetHC86Dgo?feature=shared

https://youtu.be/gjHEg6TCpi4?feature=shared --> this one is a more humorous discussion from the Daily Show