Well said geeser
Singularity:
I feel for you, though I still think your parents love you, and care for you, it's only natural they worry about you, though it's kind of warped belief they have, they think you are doomed for eternity, going to hell, and the such. All this shows if anything concern for your wellbeing. Anyhow educate them, slowly, use the bible if you have to, just educate them.
You don't state your age, so I assume you'r all grown up now? right?
If you are not grown up, don't try to educate, they believe they know best, if you are, well it's up to you to try to educate or just leave it at that. But do know that they love you, and care for you, that's why they act as they do.
BTW I went through about the same thing, though not so drastic, my dad was an atheist, mom a catholic "thought not totally zealots" I've educated my mom on religion as much as I posibly could, she does not consider herself a catholic today, nor accepts much of religious rhetoric, she believes in god, but does not adhire to any kind of religion, a deist is what she has become. I can deal with that.
I've gone through 3 different denominations of christianity. Catholism, christian, and then last babtist. I turned my back on religion when I turned 21, the choice when i anounsed it to my family was not well taken by mom, or my sister, though they are over it now, I don't wear my lack of belief on my shoulders, don't anounce it to anyone, unless the subject comes up.
Godless