Why is it important to learn to settle disagreements without the help of teacher or parent?

It is important because we are now starting seeing the world on how it is how different people act the way when they do any kind of drugs.Now that we are growing up,we should be like asking them different kinds of questions that will make their lives be more comfortable to not make him be offended and like ask the person with real calm and with alot of patience.Another example will be bullies.We know that bullies lie to do bad things and pick on other people,which will make their feelings be really sad that would cause him to cry because that person (or bully) didn't realize the person would cry or make him or her,feelings be that sad than he or she would think.Bullies can be a great example of to tell them to stop or quit bullying that person and if that person would be right now bullying me I would've just immediately would tell them to stop right now,but in a polite way will not make them feel like I'm just offending that person or making him or she be more furious than he or she is,because you can tell right away that you are offending that person or making them be in a bad mood that will cause a big problem to hurt me and to get into a dangerous fight that will cause a big problem in any place.I think drugs and bullies would be a great example of mean person that are not polite with you or other people that have trouble seeing them because they are afraid that they would get hurt,so I think those are very good examples we could use without a teacher or parent.