I'm trying to understand you, really. I use myself and my experience, because I cannot speak for others. But there have to be thousands like me.
I see tremendous good in every religion that I know anything about. In my particular religion, as you know, alcohol is not allowed. Therefore, there are millions of us not drinking that otherwise, might be. That many less potential drunks on the roads. Here is one way that a religion has increased public safety.
I grew up inseparable from my best friend. We practically lived at each other's houses, throughout most of our childhoods. So I look at her life as a sort of measuring tool, to compare with mine. Her family was agnostic, or maybe vaguely Christian--non church attending. Mine was LDS. Had I not been religious, I would likely have been exactly like her. When we were teenagers we each had our boyfriends; mine I later married. She had a pregnancy scare. She ended up not pregnant, however, HAD she been, she would have either given up the baby, or gotten married (which would have led to a divorce as they soon after broke up), or she'd kept the baby and another statistic is added to single-parenting.
OTOH, I never had a pregnancy scare, because I never had sex till I was married. Why? Because of my religion--and for me, THAT was the ONLY reason I didn't. I simply would not have been strong, or smart enough without it. Now multiply my case by thousands--and you have another benefit to society.
I'm sorry this may not be the answer you want. It's the best I have. But it's a scenario I've seen many, many times.