I'm not sure if it's as simple as lack of existential threats, but I'd agree that it is important to have a purpose in life, and a daily routine, and research b

I'm not sure if it's as simple as lack of existential threats, but I'd agree that it is important to have a purpose in life, and a daily routine, and research backs this up. It's also important to rule out any life stressors that could be causing the depression, such as an unrewarding/stressful job, or living somewhere that you don't want to be.