People are always looking for something to blame, Funnily enough they never look for solutions...
Trying to understand the underlying causes of something is often necessary to coming up with workable solutions. Example: you can't very well find a solution to the problem of obesity in North America without coming to grips with the causes of obesity (diet, lifestyle habits, poverty, access to proper health care & education, and so on). This is different from trying to assign blame for something in a guilt-trippy passive-aggressive sense.
If you want solutions, you need knowledge... "causal knowledge" as the brilliant (and English) historian Perry Anderson put it