I consider average to be between 5 inches and 7 inches. I have come to that conclusion because before my present boyfriend, who is quite a bit larger than that, all my partners were that size except one who was smaller.
My boyfriend is wonderful, and there are advantages and disadvantages in relation to his size, what is important is him not his penis.
I suppose if I am honest a more average penis is more ideal for me. However I would prefer to concentrate on what is the ideal man, not the ideal penis.