anime fans, please explain this to me

[marmielake]

in all seriousness, i want someone to give me a reasonable explanation for this.
that shitty series evangelion, the characters are supposed to be about 14 right? why does it seem like anyone that likes the show collects drawings of said 14 year olds in sexual situations? isnt that kind of perverted? i mean it seems odd that a grown man would want a picture of a 14 year old girl having sex with another 14 year old girl, drawing or not.
it just seems wrong to me.