Is it Wrong to Complain?

I don’t think God likes complaining since He destroyed Korah and all of the men with him when they complained against God’s anointed. Then the people complained because God destroyed Korah, so God destroyed 14,700 people because they complained. (Numbers 16) I think God wants us to be thankful.

“Do all things without complaining and disputing, that you may become blameless and harmless, children of God without fault in the midst of a crooked and perverse generation, among whom you shine as lights in the world…”              Philippians 2:14,15  NKJV