Why isn't a library like mcrypt installed out of the box by default?

I just spent all of Sunday, and half of Monday night installing "dependencies" for the mcrypt lib.

My woes began when I fired up the macbook pro to install phpmyadmin. I need to do some heavy lifting without spending too much on the command line in terminal.app

I will summarize the steps I followed to install and configure mcrypt to work with everything else on mac