Because it's just that, I feel as I am brainwashed. As in like "you better come back or you will die in Armageddon."
Yep, that's quite right. When i was your age the only ones who'd die in Armageddon was the evil ones, then it was anyone who's not a JW, and now as far as i can deduce from Tony Morris III it's anyone who isnt pioneering.
In my opinion, fear of being killed isnt a good reason to join a religion.
Also:
They told me that if I disassociate myself, then my grandfather will lose his position as an elder.
Only if you're living in the same household as far as i know, check the elders book i sent you:)