Sorry to hear that, Oompa--especially the part about your parents. To face that kind of rejection from the two people who should love you the most must be devastating.
And here's the kicker: it hurts them every bit as much as it hurts you. This is truly a no-win situation for everybody. You're losing your parents--and you don't want to lose them. They're losing their son--and they don't want to lose you. But they feel they MUST lose you because of their misguided loyalty to a book publishing company who they believe speaks for their imaginary god.
I once read a statement that applies to your situation. It went something like this: 'Generally, good people will do good things, and bad people will do bad things. But if you want to see good people do bad things--that takes religion.'