Why do some people often argue against homosexuality by using pedophilia?

Pedos usually rape same sex thats gay no matter what they claim. Plus groups like NAMBLA promote men having sex with young boys. "Once they turn 8 its too late". My friend works in a prison. He told me a popular prison joke a few weeks ago. Why is it cool to shower with a 12 year old? Because once their hair gets wet you can slick it back and make them look like their 8. Pedos usually rape kids the same sex. Now stat rape is usually concentual but considered rape because of persons age not because they forced or threatened the victum. Those people qualify as pedos but in my opinion their just sickos thats just me though.