Many of my neighbors go to church and I'm very jealous at how much social capital it provides every single week for essentially free.
It's such a shame that something so good is wrapped in something so silly.
For instance, replace God and Jesus with the Superego and Id respectively. You'd be surprised at how much sense some quotes make.
But religion is so vague, it's almost mad-lib. And some parts will still be complete nonsense or primitive statecraft memes.
Sharing this with other church-goers might not be well received, also.
However, in contrast, my fiance is from Peru and goes to a Latin Church; there you have a very strong sense of community and can meet plenty of people. Also, you probably won't be meeting your SO at the Church directly but you will most likely be introduced _through_ someone from the community (especially older people who have bigger families).
The other thing about religious communities is that "dating" is not about hookups or casual sex but more about about finding life long partners and marriage. This can be a blessing or a curse depending on what stage of life you are in (though if you are truly devout, you won't mind) so it's not perfect.
Anyway, for non religious people, there are still plenty of ways to meet: Volunteering programs, social clubs, sport centers, etc.
The only advice I would give is meet as many people as possible because chances are your potential partner will be introduced to you through friends of friends eventually.
