ANGRY FOR WHAT ???

why this live must have angry ??? why GOD angry ??? why angels angry ??? why human angry ??? why animal angry ??? why evil angry ??? angry for what ??? why not live without angry ??? why angry exist ??? can angry disappear not exist forever ??? how to make angry disappear not exist anymore ??? angry is good or bad ??? angry is sin or not ??? can live forever without angry ??? angry is fire can burn everything !!! fire is good or bad ??? good or bad is depend on use for good or bad !!! angry is good & bad !!