Several men here are unaware that most of the nerve endings in the vagina are located 1/3 from the vaginal opening and it shows.I have to agree with Dalex.
GO DEEPER!
If this helps any, I'd prefer a man "tease fuck" me into orgasm by using just his cock head to penetrate me - after some time of him stimulating these nerve endings I'm writhing with pleasure. A little clit simulation added, it's the perfect combination to send me into a fit of multiple orgasms, one rolling in right after the other.
This... This is much more enjoyable and pleasurable for me.. Going DEEPER (by the way I hear this accompanied with grunts like cavemen beating on their chests ) usually only results in pain as he rams into my cervix.. at that point not only am I not impressed, but I'm no longer aroused.