Hi, you all, I have to agree with Prisca, et al.
You cannot replace a lifetime invested in an ideal.
I've known elderly people who accepted the WT message late in life, and they never seemed to shake their old ingrained teachings, rather stumbling along with both sets of beliefs hoping they had their bases covered. Kind of sad, really...
In my own experience, I told myself I just wanted to make sure I didn't lose my mother (JW for almost 40 years). She lovingly listened to everything I had to say, she read the old literature, she examined the Kingdom Interlinear, etc. The result: three years of anguish for her-- and she's even more committed to her religion, just with none of the vigor and idealism she had before.
I wish I had left her alone. She never would have shunned me anyway.