CatzGrad2016

Hi, we just got done covering "reaction kinetics" and equilibrium but when I tried talking to my physics teacher about when matter starts from a non-equilibrium state in an isolated system, it spontaneously moves towards its own state of equilibrium, he didn't feel the need to tell me. I asked him about reactions always finding equilibrium except for the universe. Because I remember my chemistry teacher telling us the universe is the only isolated system technically. When I tried to ask him why we spend time calculating equilibrium when the only true example of an isolated system isn't in equilibrium? How can the laws of the universe hold everything in equilibrium except for itself? It seemed weird to me because if the entire universe doesn't go by equilibrium, how can we say many of it's parts are always in equilibrium. When I tried talking to him about it, he got mad, just like my grandma did when I asked about Jesus having siblings? I figured my teacher would just explain why it makes sense, and didn't expect him react like my bible thumping grandma. Can anyone explain?