Nekked art is distracting (to me) in a non-sexual way.
One of my sisters is an artist, and while I think she is very good at what she does, it seems that at least half of her pieces (paintings, sketches, sculptures) need to put some clothes on. Because when I look at them, all I can think is, "Poor girl is gonna freeze to death" or "Wow, she'd look great in a red dress".
Basically, I just completely miss the point of the piece.
Also, just like the guys don't want to see another's guy's um, junk...I don't really want to see another woman's various woman bits in all their nekked glory.