text: More than one opinion on a subject can help people to make a better decision. An opinion on small thing such as which shirt to buy is also helpful because it keep people from spending more money than they need to and ending up not having enough money for essentials such as food or their house payments. Sometimes the opinion someone gives you could help decipher if that person is a good person to be around and that their actions won't impact you in a negative way. You might find that they aren't as great of a friend as you thought and are actually trying to add negativity into your life.