chicken and egg... part 1

there are many things we see in life where we don't see the causality of something.. take this thing i observed a year back for example..
i noticed that most guys who drive convertibles are bald.. are they bald because they spent most of their youth stressed out earning their convertible? or are they bald because born rich they spent too much time driving the convertible with the top down? and if its the former then isn't that ironic? :D
the point i got from this was to be happy with whatever we have at the moment..