It is sufficiently sized to stimulate the vagina and give good satisfaction.
no
Not a chance. You're way too small. Two words: penis pump.
A curved penis can satisfy a woman as much as any other penis. As long as you can get it in, and can do your thing, then you can satisfy her. Girls are more satisfied by how you use your penis than the length or straightness of it.
yes it will because it hardens the penis.
Unfortunately you will not be able to satisfy your wife, or any woman, sexually with a 3" penis. You will have to work on your other skills such as touch, caressing, oral, etc. Even 2 inch penis is long enough to reach the G Spot, so work at it - you will be able to satisfy her. Good luck!
average
yes
Possibly.Most likely.
A man can satisfy women with a 5 inch penis.
8 inch and 6 inch are above average for length and girth, respectively.
no
A square one :) Hopefully you mean 5.5 inches in circumference, not girth :)