It's more diverse than sitting at home, but I think exposure to a few TV shows has more diversity of thought, ethnicity, sexuality, etc., compared to going to church.
I'm not saying its bad for people to get together and talk. I see that church was an important mechanism for this in the past. However, I can't get past the negatives (supernatural belief, child abuse, kowtowing to authority, shame, ostracism) to believe it will continue to be a net positive.
What we need is more of what I think the Unitarians are after - non denominational community.