> One student told him that her parents "want my full attention on grades and school." But such advice reflects an outdated reality, one in which a college degree was almost a guarantee of a good job that would be held for a lifetime.

I really don't think the outdated-ness of this advice has anything to do with the value of a college degree.The modern open dating offers lots of varied sex to those who can navigate it well. This seems like way more time intensive, especially in terms of displacing constructive activities like studying, than a committed relationship.