It is not great that all of one's friends are married and have children because it implies that the person is unable to find a partner themselves and is envious of those who are able to.
Consider the statement "All of my friends are married and I can't even get a decent boyfriend.". Based on this "It's great how all my friends are married and have beautiful families meanwhile I can't even get a decent boyfriend" a true statement? Yes, no, or I don't know?