Too many women worry that masturbating, particularly with a vibrator, will desensitize them. Actually, some research has shown the opposite. One study found that compared with women who didn't use vibrators, women who did had better lubrication, were more easily aroused, and found it easier to orgasm when having sex.
Experts say that masturbating helps you get in touch with what you like sexually, and that can make for a richer sex life with your partner.