I have a very sensitive system. I can feel (smell, taste) things that most people ignore. I have a very low threshold of pain. It is very easy to over stimulate me. After a while, when stimulation turns to overstimulation, the affected areas just turn off and it becomes only touch.
That means when I am being fingered or penetrated it will feel good at the beginning but I wear out and it starts to feel just like I was being touched anywhere else on my body. It doesn’t feel sexual. This is why I actually prefer things to move along rather quickly once that point has been reached.
I like to be teased. The feel of clothes being moved out of the way, slightly askew, pulled on.
Touched lightly feels delightful.