Yes it hurts....but your dad and mom.... are longing for everlasting life. That belief is more important then you.
You are not part of that deal. You can't be on a paradise earth with them and not believe in the Corporation..... the WTBTS.
In truth they don't believe in a religion....just a made up corporation that thought becoming an official religion would save them taxes.
It could have been Amway which would have been a more sane choice..... unfortunately it was the JW's.......no real difference between them they each sold a product door to door. But on family matters one remained part of their family and the other was shunned.