I always thought the library was the Atheist/Agnostic church?

It's called Facebook... or a local bar lol

There's a group here in Wichita and I know there are branches in a few other cities called Oasis. It meets on Sunday morning at 10:30, you know, churchy time. I never went to church much but the first time I went it was a bit surreal. There's usually a musical guest but it's like music you'd hear in a bar, no message. The guest speakers have varied greatly from a WSU professor talking about the search for water on other planets to a sex therapist talking sex, to a couple who made their living in the church and stopped believing and their struggle to get out. I've met some great people there.

[wichitaoasis.org]

I thought about doing this where I live but I have no idea where to start. I am not the most sociable person.

Sounds like a play date.

Well going to the women’s march this Sunday is kind of like that. I count organizations that I am involved in that are doing good to be fulfilling this niche.
There is also an atheist meet up where I live about once a month where we all go out to dinner and that is a discussion of beliefs and ideas that are more specific to non-belief

I've often wondered the same thing. I tried a humanist society (a long time ago); there was some sense of purpose but none of community.

Unitarian Universalist churches are about as close to an athist/agnostic church as you can get.