Since I enjoy drawing, I also draw a long time(Its always nice to do something you like).
Thus i get great forests.
But to utter seriousness i go...
My problem with using pictures is that they are real!
Or from our world,... wich ever you may prefer. ahem.
I would not like it if I show my players a great picture
of the canyon they are currently in.. .and then one of them says:
Player:Yeah that is a cool picture, I saw it to last week in National Geographic!!!
Me: No eh, thats not a picture from NG thats where you are now my good fellow.
Player: But isnt that a Grand canyon photo from Ng?
One should always draw!!
P.S I know this one is on the egde, but hey! The conversation may
go on because of what I just wrote!