I don't think it would be a good idea. It could give pedophiles added incentive to target particular women, I think particularly those with younger children. Pedophiles purposely start relationships with women in an effort to get close to the children.
I 100% agree. The same goes, in my opinion, for people who post photos of their children. ( Yes, I do have my son in one of my photos but he's 27......)
We can simply ask our prospective date about ages of our chidren.