Nancy, you said:
I know that they believe what they believe SO intensely that they feel they REALLY NEED to treat me the way they do. I respect their choices, and I KNOW they do not respect mine, but I know that they are trained to react that way. It is understandable that they would have no choice but to believe that their way is the only way...after all, they have given up their children for it! Their consciences wouldn't allow them to believe anything else!
You are very mature. You realize that they are doing what they think is best to "bring you back into the fold." I was just like them until a few short years ago. If I was still "in" I am sure I would be doing the same thing they are.
Since you and your folks still contact each other, there is hope. They are being a teensy bit disobedient for sending you e-mails....so there are cracks in the armor.