Theists tend to have the misconception that a lack of belief in their deity would make them unhappy and give them license to become serial killers. Lets not forget that religious belief is not a guarantee toward happiness and that belief is not a deterrent for bad behavior, which many theists prove on a daily basis. It is merely their misguided assumptions about atheism that make them think it would be harder to be a non-theist, because the comfortable thought that one is ensured a pleasant afterlife also keeps them ignorantly tethered to their beliefs.
"Never trust a fox. Looks like a dog, behaves like a cat."
~ Erin Hunter
~ Erin Hunter