Another friend of mine has this theory: it would be great if humans’ life goes in reverse. First, you are retired for 20 years or so, don’t do much, and enjoy life. Then, for the next 40 years, you’re working, but not too hard, since you’re not concerned about retirement. After that, next 20 years, you go to school, chase girls, etc. Next 7-8 years, you’re just playing, somebody else is taking care of you. In the end, you simply disappear and, through the embryo become – nothing!