I would not be so quick to relegate philosophy to the trashbin of history. In the present day and age, technology and the sciences are very much in vogue; yet one must remember that at one time, science and philosophy were one and the same. There are still many unanswered questions out there which philosophy attempts to answer. As long as there are unanswered questions, there will be a need for the discipline.
The true reason, however, that it is not universally studied is because it requires people to actually THINK, and reason. In this age of instant gratification; instant messaging, etc., the idea of working through a problem logically without some tangible outcome is not worth the effort. I remind those who feel this way--including several who have posted on this site--of the words of Plato: the unexamined life is not worth living.