I'm sorry, I hope my comment didn't come across as flippant about how the majority of churches treat women, LGBTQ+ people, and others. I'm pretty firmly in the unbeliever category myself and left out of disgust with all the exclusionary practices.

I did spend several years in an ELCA church pastored and co-pastored by a woman and by a gay man, who made a point every week of welcoming non-believers to the service. It nuanced my worldview a little bit. They were lovely people, but the congregation was definitely fighting upstream in wider Christian culture.

In my mind, the main secular benefit of church (for people who were not excluded) was access to ready-made community, reinforced by a regular meeting space and rituals (like singing) that help people bond and process major life transitions. I've been on the outside for about five years and haven't really found anything that fills that space, although I'm always interested to hear what others have found.