Bob Greene: I think me and my all or nothing temperament is inclined to only care about friends for life. We live in a much more transient society, we may have great friends for life, but if you live in a brand new city, you need some friends. He says Bob Putnam would say that what churches and pubs do are bringing together people who otherwise wouldn't come together. Green: Did I get the question right by invoking Bob Putnam?