system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] Why is it that homosexuals are considered to be born gay while pedophiles are considered to have a mental disorder?
gpt
Those aren't mutually exclusive options. To be considered a disorder a condition must cause some sort of difficulty that would be improved if it were somehow treated or removed.  So homosexuality is not considered to be one by the medical profession as a whole. 

That has no real bearing on whether it has a biological cause or not.