Thank you all for that much needed slap upside the head! Mkr, Xandria, thank you for reminding me of my rights and responsibilities. Apostate Kate and Sherry, thank you for your compassion. AuldSoul, thank you for sharing your wisdom.
I did visit a therapist after the last incident with my parents, which was just under 6 weeks ago. In addition to keeping the keys, I stopped visiting my parents for about 3 weeks. I wanted to stay away from them for a while. That was a big step for me, since, after letting my folks know I was leaving the Org, my calls and visits have been more out of guilt and obligation than because I actually enjoyed visiting them.
My weeping and pleading during that "discussion" was a special low point. I was so completely unprepared for their behavior and so shocked that my parents weren't the people I thought they were. After leaving and getting myself together, I decided that I could no longer trust them. I decided that religion would no longer be an acceptable topic for discussion. Instead of calling them multiple times a day and spilling all the details of my thoughts and deeds - as I'd done all my life - I call a couple times a week and keep my plans and activities to myself.
It took writing this thread and reading your responses to refine things for me. While I can trust them to come through in an emergency and to feel what they consider love for me, I can no longer trust them in specific areas: with my more fragile emotions, with my privacy. And I've learned that when I disagree on an area as important to them as religion, they don't address the issues, but resort to attacking my motives and my integrity. They've got sore points that make them nasty when touched.
So now I have to decide if that's enough. I realized after reading the replies that part of the problem is that I'm still trying to hold to the old terms of our relationship: I do what they want, try to anticipate their desires and take responsibility for making them happy, and they will, in turn, give me their approval and displays of affection. A big part of the disappointment I feel after a decent conversation with them is from the fact that, unlike them, I can't act like everything is normal, and I know things will never be the way they were, no matter how much I want to get back to that fuzzy, nebulous, unbordered blob of codependency we called a relationship. If I'm going to maintain this relationship, I have to write new terms: I love them for the good I see in them and know is there and refuse to feed the sides of their personalities that have been warped by this religion. I have to inject some space into the relationship and, while giving up the responsibility for their emotions and happiness, take up the responsibility of caring for my own, independent from and regardless of anyone else.
And to just think that four months ago, everything was honky-dory and I was happily ensconced in an immature relationship with my parents and a spiritually abusive relationship with the Org!