More a what do you think than an AIBU, but...
I have three children. I was having tea the other day with a friend who has two. She was having trouble with her DD's behaviour, and asked me for any ideas I might have.
I suggested something, and she said that she might try it, and that it had already been suggested to her before, but she didn't even consider it, as the person who suggested it has no children. (I wouldn't mind, but friend also asked this person for the advice...
)
I thought about this attitude after, and realised that most views I held before parenthood are still the same.
Much of the terrible advice I have received has come from my MIL, and my sister (who, after TTC for years finally is pregnant!!) has had many pearls of wisdom.