Being a post grad student at University

I am currently half way through a post graduate diploma in arts in sociology.  I am wondering if that is a mistake.

As a post graduate student I am entitled to go into the post graduate computer labs.  In the one and half semesters being a post grad student.  I have only been in the post gread computer labs twice.  I have a swipe card, everytime I use it access the post grad computer labs it won't work.  Apparrently it has been recorded as lost.  This is strange as it was given to me by the sociology department.

One wonders if the sociology department does not really want to be in the sociology department.

I am wondering if the stess of being a post grad student ids worth it.