Some people ask, "Why is there crime in the world?" For most crime, the answer is obvious. Everyone has one reason to steal stuff: the stuff! Don't you want more stuff? Don't ask why there is crime. Ask what features of the world maintain order and protect rights.
Don't ask: "What is the cause of poverty?" There is no cause of poverty. Poverty is nothingness, the lack of things that people must make. Nothing comes from nothing. Ask: "What is the cause of wealth?" Ask the right question and everything changes.
I am sure there are exceptions to this, but as a general rule I think theories about human life have to be primarily theories about the good. The reason is not metaphyscial, as the Neoplatonists would claim (good = being, bad = non-being). The reason is that everything good in human life (but not of other animals) is someone's achievement. Bad is something that happens when no one effectively moves off the zero-point to achieve needed things.
For many years, psychologists asked why people are sick and irrational. Now they are asking how healthy and rational people manage the chaos their sense-organs throw at them and navigate to success in the world. Now maybe everything will change.