HOW CAN YOU NOT BELIEVE

how can people not believe in God?all they need to do is look around.look at what is happening in this world.compare it to what the book of revelations says.how can some believe one day and the next day they totally change their minds.i just can't comprehand this.when things are going good they believe.when things are going bad,they don't believe there is a God.they say"if there is a God then how can such bad things happen".God gave us free will.we are the ones who choose to do bad things.thats not Gods choice.when we choose to take the wrong path then we have to face the consequences to.don't blame God when bad things happen,blame yourself for the choices you make.don't you think its time we all open our eyes and face the truth.there is a heaven and a hell.i am so very worried for the ones who choose not to believe.especially when it comes to family members.