I'm so sorry you are going through this. I lost my faith long ago - I know it bothers my parents somewhat that I have rejected it but they just want me to be happy so they don't say much about it to me.

What I have learned is that some people like to have something to believe in, and they find comfort in the rituals and traditions that go along with the religion. While you or I may not believe in the fundamentals of the faith, i do believe everyone has the right to believe in what they want - if it makes them happy to do these things....so be it.
I don't know if you live with your family and are subjected to this on a daily basis - I only have to do these things a few times a year. If it's filling you with so much anger and despair, maybe there is someone you can talk to about it?