When I was a kid, my family went to church every week. However, as I got older, the more I realized religion was nonsense, especially after looking around at all the bigotry, hatred and violence that was inspired by religion. Then there are the pedophile priests, as well as other sexual, physical and psychological abuse inflicted by practitioners of religion.
Recently, in Toronto, there was news of assault, called "hazing", at a private Catholic school. Apparently, this had been going on for many years. The principal of the school did not report the assault to police. The police found out about it, after it had been reported in the media. Even more, many of the parents criticized the media for reporting the incident, as it tarnished the school's reputation. Yep, these parents were more worried about protecting the school than their own kids!
Last year, a Baptist, who came to my door, called me a sodomite for wearing nail polish, after I told him to leave.
Years ago, I was told I couldn't have morals, if I didn't believe in "God".
Years ago, when I was still going to church, I was told, by a friend, that I wouldn't be going to heaven, if I didn't go to HIS church.
There is no historical or archaeological or historical evidence to support the bible, but plenty that contradicts it. There are even parts of the bible that contradict other parts.
It's a very long list that shows why I know religion to be nonsense.
There will no doubt always be things we don't fully understand, but we certainly don't need fairy tales to explain them.