These so called 'Greek' societies have been responsible for untold damaged both foreign and domestically. These societies have no place in a modern world that allows feral behavior of members to exist and thrive unchecked.
From hazing to promoting racial hatred; allowing these to share environments with places of modern learning is of no benefit to the society and large.
If you need to join a society to make 'friends' or get a job well the you have already sold yourself short.