i have basic understanding of how ssri work. as i already typed, some people's brain doesn't make or keep enough serotonin. yeah, usa culture can be depressing. but clinical depression is worse than that. and most of time, the cause is only biological. the brain just doesn't make or keep enough serotonin. serious emotional trauma can cause ptsd and depression. but that's soldiers who have been in combat, victims of long term abuse, etc. some ssri treat ptsd. before ssri were invented, millions of people suffered from clinical depression, ptsd, ocd, etc. there wasn't a very effective treatment. until about the 1950s, most americans were farmers. their lives were not easy! i agree with your opinion about urban living. before the internet, urban areas were cultural and shopping centers. now, i don't see why people choose to live in densely populated urban areas. it seems unnatural.