I had been drawing in pastel cvhalks for a year or so when my parents got me a book of "Faces and Figues in Chalk." I was 14. Yes, I ate it up. Being able to draw naked girls was a thrill, but I don't believe I EVER drew anything "inappropriate" read "Sexual" until after I became sexually active. You draw what interests you AND that is within your frame of reference.

Poser is just another drawing tool.