I greatly sympathize with your situation. Before I moved out, I also felt guilty, like I was being selfish for being true to myself and honest with my parents. But, I know that I simply couldn't handle the charade any longer, and I told both of my parents and my sister that the door of communication was always open on my end. They all told me that they loved me but they wouldn't be taking me up on that offer because they "love Jehovah more."
I'm not sure any of us are necessarily being selfish, we are simply doing what we believe to be the right thing and they are doing the same. The difference is that I base that decision off of logic and secular humanism, whereas they rely on the Watchtower to decide for them what is the right thing.
Also, neither side is willing to compromise because they believe the other side is being misled. However, unlike them, you and I have actually listened to both sides of the story and weighed the evidence before we made our decisions.