Wait you kicked your dad? Hah if my son kicked me... Anyway, they probably want you to be religious because they don't want you going to hell. In the end they care about you. If I was a Christian I would want my kid to be one too. Your best bet is to just try and debate with them on the many flaws of Christianity. If they are the "HOW DARE YOU DISRESPECT THE LORD" type of parents, just try to cope with it all. They are your parents after all.