This was from a woman in another forum:
Too much length is not really a good thing sometimes. In certain positions the vagina shortens and sex can be uncomfortable with a long penis. Plus, with a shorter penis there can be more stimulation between a man’s pubic area and a woman’s clitoris - a longer penis can prevent direct contact because it can’t penetrate fully into the vagina.
Some women prefer a thicker penis and I can understand that, because there are two lengths of clitoral tissue that extend under the skin from the clitoral head right down to the sides of the vagina. These bands of tissue swell up during sexual activities and and could be more strongly stimulated by a thicker penis. These bands are partially responsible for the feeling of tightness at the vaginal opening that happens during arousal.
I think it is also psychological - there is a sense of fullness that some women seem to find enjoyable on a certain mental level. I am not someone who is personally sold on the difference that comes from a thicker girth, but I think some women care.
Starting Size: April, 28, 2010: NBPEL-7" Girth-6" (base, MSG, glans)
Currently: BPEL-8" NBPEL-7.25" Girth-6.25" (base)/6.125" (MSG)/6.125" (glans)