There may be many reasons why parents like preaching. First of all, parents may think that they have more life experience and wisdom, and they hope to help their children avoid making mistakes, solve problems and achieve success through suggestions and guidance. In addition, parents may feel responsible and think that they have the responsibility to ensure that their children grow up to be healthy, successful and moral people. Finally, parents may worry that their children may be in danger or in trouble, and preaching can make them more vigilant and cautious. Although parents may preach for different reasons, the purpose is the same, all to help children become better people, so we should respect parents' opinions and listen to their suggestions carefully.