What is the causality for porn?

I came across this random graph on the Net a few days ago. I thought that it was a very funny graph. Look at it carefully and you will see why. The graph tries to illustrate how different things are a function of the amount of porn that a person watches. However, there are a few nagging questions.

First, the amount of porn that a person admits to watching remains constant throughout. What I don't get is why a person would admit to watching porn if he/she doesn't watch any. And if a person is a porn king/queen, why wouldn't they want to admit that, boggles me as well. According to the graph, it doesn't matter how much porn a person does or doesn't watch, they will admit to watching a fixed amount.

Second, a person's girlfriend prospects takes a dive at a certain porn watching threshold. However, it doesn't ever reach zero. I wonder if this is because the girls are disgusted at guys who watch too much porn, or is it because the guy is no longer interested in any girl that does not exhibit special skills and attributes.

Third, respect from friends actually increases as a person watches more porn, up to a certain maximum. So, a person's friends will feel that they're weird if they don't watch any porn, and if they watch too much porn. This is a difficult one to balance. Damned if you do, damned if you don't. Also, I don't know how friends are supposed to know how much porn a person watches if the person will only ever admit to watching a fixed amount.

So, this is an interesting graph for discussion. If you have any other inputs or questions, please post them in the comments. It would be interesting to see what everyone else thought of this graph.

PS. In case it isn't obvious by now. This graph is not meant to be taken seriously.

*** image from an unknown website ***