ADD, As a parent of adult children, I can only imagine what you must be going thru. My family all got out together even though 2 of my children married JW's, now divorced. I often applogize to them for raising them in that cult. The only thing you can say is that you could no longer stay with that belief system because it was stealing your integrity if you remained an elder. Let your son know you will always love him and if he chooses to visit and bring the children, he will always be welcome in your home. Obviously he loves you too and is angry right now. He's angry and this letter is a way to try to engage you in some way. JW's always blame those that leave for the reason they have to shun them. Try to speak lovingly to him and that you left not to hurt him but because you could no longer consciencously follow this religion and have a clear heart.
I remember when I suddenly knew in my heart I could no longer stay with it. I was out in service one day and was a regular pioneer, and I began crying, and filled with tears telling the elder ovrseer that I could no longer preach and it was no longer in my heart to do so. I went thru a rough time leaving but I did stop going after a lot of therapy and the support of my husband and children who were then just out of highschool. My youngest was 11 tho, and when we stopped attending a friend from the Hall who's daughter played with her, told me they would continue to pick her up and bring her to the meetings even if I couldn't bring myself to go. I said absolutely not, because I knew if I allowed this they would turn her against me. She grew up "out of the truth" and celebrating holidays with us and had a "normal' life. I'm so glad I took her out. My other kids do still have old JW issues, but no longer consider themselves part of that religion anymore. Interestingly, my husband and I got disfellowshipped, but none of my children did. Our older son was a Bethelite and I pioneered with my daughter when we were in.
So I guess because of their JW roots, they totally don't get the holidays the way my husband and I and our daughter do. We all celebrate together, but I see only my youngest daughter with the genuine holiday spirit.
I do hope you can work it out with your son. It's so sad the way this religion ruins natural family relationships.
Shana