There's no particular evidence that any of the lower mammals or any of the other animals have any interest in aesthetics at all. But Homo sapiens does, always has and always will.
The images I like best are parts of series that I've started, in some cases, with the pregnancies of the mothers of the children in question, and I continue that series right on through the birth of children to the child that resulted from that first pregnancy.
If somebody's pointing a trembling finger at your pants and saying you shouldn't be doing that, follow that finger back, go up the arm and look at the head that's behind it, because there's almost always something fairly woolly in there.
What pedophiles and people who have sexual desires on children lose sight of to a terrible, terrible degree - a devastating degree - is that their victims are real people who will suffer forever whatever abuses are perpetrated on them.