I can safely say that the orgasms I have now are about 3-10x better than the ones I used to have, and that isn’t hyperbole. Sex is much more exciting and much more satisfying, but that didn’t happen by accident, and it didn’t happen overnight.
As clichéd as it sounds, there is truth in that “the brain is the largest sex organ.” That’s because the brain itself is hard wired to experience pleasures of the flesh. When it really comes down to sexual desire, your brain is doing most of the work and the body just follows along. However, you can’t have one without the other.