The importance of community and ritual

This is mostly Christian stuff, but starting at minute 13, he talks about the importance of church and music. I think one interpretation is the importance or community and ritual. This is interesting to me because I am trying to understand why atheists may be more prone to depression, and through everything I have read, the evidence points to lack of community and group exercise or ritual.

http://rzim.vo.llnwd.net/o43/MP3/LMPT/LMP20140809.mp3