Reach orgasm just by penetration

I'm curios to know. I have never ever ever had reached climax just by penetration. I always have to have clitoris stimulation. Sometimes it gets so sore down there that I can't even feel the guy.

And not in a slutty way but I've been with many guys, all shapes and sizes, and no difference.

Like it feels amazing and good, but not "I'm-gonna-cum" kinda good....