I try to make a complete reasoning, hoping to have understood the question correctly (and apologizing for my bad English).
My penis measures approximately 5.5 inches. Am I happy with this size? To be honest, absolutely not. Moreover, especially when the penis is flaccid, it shrinks a lot. I would like to clarify, however, that I do not consider my penis extremely small (also considering that there are several guys who are more dissatisfied than me), but certainly a little below average.
Personally I believe it's "better" having a penis not under 5 inches for a question of aesthetics. Obviously not for a functional reason (in fact even a penis, for example, of 4 inches from that point of view is fine). Maybe I'm too selective or strict, even with myself, but that's what I think.
I would not even like to have an exaggeratedly large penis. In short, I I would prefer to have an above average size: 6.5 inches, maximum 7, would be ideal. Not further though.