The fact is, some of us don’t think we need anything to follow any more. Life is so much simpler when you don’t have to think of greater powers or an afterlife. We don’t want to believe in sin and the greater good.
We want to be able to get on with our lives, do what we like and live life to the full. Religion gets in the way of that. Sunday mornings are easier to bear with no drone of a priest early on the morning. Likewise for special occasions and (ironically) religious holidays.
Yet we all can become very religious when it’s needed, think of how many people declare their love for religion when they want to be married!