Oh I can so relate to your story. I have been out for about 10 or 11 years as well and like you never felt the need to go back or missed it in any way. I am also new to this board, I started posting a few days ago and it was my first ever posting on a site like this. Funny still how that programming works, I am just now startd to realize that I spent the better part of many years being a JW apologist. I also like you still have a relantionship with my parents. I have a child and and we celebrate all holidays like crazy people (we have to make up for lost time )
My parents just recently found out we celebrate the holidays and it wasn't really a problem we just don't talk about it ever and I try hard not to rub it in there faces sort to speak. One thing that really helped me to realize is that you are an adult with your own family, yo make your own decisions now that are good for you. Your parents still loved you after you walked away from religon perhaps if one of your children slip and say something about the holidays it would be small compared to you leaving the whole religon. Also you being gone and happy for 12 years must say something to your parents who notice that. Try to keep living your life the way you are and not be pulled into the old way of thinking whether the society approves of your bahavoir...
~Mad Love~ Miss Bliss