Ask them this question:
If I become a JW and have a child that decides at the age of 14 to be baptized as a JW, and then in their 20s decides that the religion is not for them, verbally disagrees with some teachings of the JWS and is consequently disfellowshipped, am I allowed to have a normal, loving relationship with that child?
They probably won't give you an honest answer to that one.