A lot of the posts in this thread don't seem to be aware of the actual medical literature on penis size.
This conversation comes up enough that I've actually researched it, and these charts address the most relevant concerns to my mind. These charts are from
http://averagepenissizes.blogspot.com. I believe the chart is based on averages of study findings from measurements taken by doctors. This is necessary since men tend to add up to an inch on average if self-reporting.
From an
article on the site:
SMALL: 1-to 4.3 inches
MEDIUM: 4.4 to 5 inches
AVERAGE: 5.1 to 5.8 inches
LARGE: 5.9 to 6.6 inches
EXTRA LARGE / HUGE (aka: Oww!): 6.7 and up
Bar graph with penises as the bars:
This chart is based on what women report as ideal size based on satisfaction/pain. I remember reading that the fact that women prefer significantly longer penises is mostly just for aesthetic reasons. That makes some sense since the average vagina is only 3 to 7 inches deep and I've read there's not nearly as much nerve fiber after about the first 3 inches anyways, though I suppose longer allows a greater variety of sexual positions. Girth seems more important overall because that will dictate how much sensation is felt.
I'm ideal girth and close to ideal length, fairly even keeled and straight (preferred aesthetically), so I don't have any reason to be unhappy with my equipment. The chart is based on average preferences, though, so if you're outside of "ideal" or "very satisfying but not ideal" there's still plenty of women out there that will find your range ideal for them. I'd think a little smaller than average is better than a little bigger than average for women's satisfaction to be honest, since bigger than average is going to cause pain in the average woman.
Here's a kind of funny
world map comparing national IQ averages to average nationally reported penis size (surprise, Africa has the largest penises).