This is a really good point, especially as i was disfellowshipped ( which i still beleive was unjust) and my three sons, who were around 12,10 and 9 years old and still in "the truth" with their mother, and all shunned me, not even seeing me at all, despite taking mum to court.
I guess her father(an elder) had a lot to do with it.
It is now some years on and my boys are of an age where they can decide for themselves, but unfortunately it is hard to alter deeply ingrained beleifs, i should know because i still beleive "most" of them.
In conclusion, respect for parents ought to be up there with not commiting adultery, and rightly so.