If I were to seek out your daughter specifically, and whip out my penis right in front of her, that would lean towards pedo tendencies & you'd be right. I'd feel the same way if I had a young daughter.
Now if I were to walk along the street naked, go about my own business not bothering anyone, and your daughter would happen to see me in that state, please explain to me how this would 'hurt' her?
Hint: you can't, because it doesn't. More likely the contrary (as in: seeing a naked body every now & then lets kids grow up to be healthy adults). As has been shown at least a few times in serious studies.
The difference here is only in how I would behave towards your daughter (and other people), regardless of being naked or not. If I'm rude, then I'm rude, even with clothes on. If I'm polite, then I'm polite, even if naked.
Although a lot more sensitive, essentially the same thing goes for human sexuality. Suppressing that from public view screws people up more badly than satisfying healthy curiosity on the subject. Or letting people have their pr0n, if they want it.
So GP is right, there is nothing inherently wrong about showing or seeing a naked body. The 'problem' with that is a cultural one, how society deals with it.