Most people spend most of their time mostly thinking about themselves, mostly. Those among us who spend most of their time thinking about what is best for society in general are a bit on the odd side. Narcissistic people, like a certain half-black celebrity type individual I could name, of course, spend their time thinking only about whatever puts the limelight on themselves and makes them appear brighter, more popular, better looking, more popular, etc., than they really are, but that is not a problem with narcissistic people. Philosophically speaking, most of us too self-absorbed to worry about whatever is bothering or affecting other people, so we spend our time doing those things that affect only us. Thus lists like this interest us.