Angry At No God?

I know people that say God does not exist.  They get angry at talk or belief in God.  Why get angry about something you don't think exists?  What I often find is that these people believed in a God who was supposed to make the world "right."  The world is a mess, or their world is a mess, so God is not doing the job.  They are angry at God.  Then they move to "God does not exist."  But they stay angry.  I agree.  Their God does not exist.  That God never existed.  They need a fixer upper God and are angry that they don't have one.  It is a much harder work to figure out why God does not fix up the world if God is Love.  Many people don't want to do this hard work.  It takes a lot of silence, stillness, reading, meditation, and they just cannot be bothered.  So they stay angry at what they say does not exist.