What if I enjoy toying with pedophiles?
Why would you bother responding to pedophiles?
Toying with them is great fun
If you know for sure that someone is a pedophile, it isn't a good idea to egg them on. You are encouraging dangerous, terrible behavior. You should alert the police instead.
Shit, so it's bad to add people who are attracted to kids to my friendlist?
It is wrong to not report someone that you know is a pedophile. You are enabling that person to hurt a child in the future.