It's not children who are viewing porn. I don't think a young child would know what it was if they saw it. It's the adults I'm worried about.
Let me ask you: Would you like to see a picture of your daughter's face superimposed on a sexually explicit pose? If you don't have a daughter, just imagine that you do.
I have a problem with jumping on the bandwagon that it's the business of government to play mind police to otherwise law abiding adults.
This is not going into anybody's "mind". Child porn is not a mental fantasy. It's something concrete: either computer images, or photographs, or magazines.
I think the Supreme Court incorrectly decided that virtual child porn was acceptable. I wonder if they would feel the same if pictures of their own children were used in these graphically altered images? This was a very bad decision, IMHO. Disgraceful, I might add.