So what has led to this precipitous falling off? Barna asked non-Christians of all ages about their biggest barriers to faith. Gen Z nonbelievers have much in common with their older counterparts in this regard, but a few differences stand out. Teens, along with young adults, are more likely than older Americans to say the problem of evil and suffering is a deal breaker for them. It appears that today’s youth, like so many throughout history, struggle to find a compelling argument for the existence of both evil and a good and loving God.