They may not be living at home, but the type of diversity the other poster was referring to (experiencing a bunch of new cultures, etc... that they lacked exposure to before) still isn't being achieved all that much for the majority of people getting the college experience. -- which they were listing that new diversity exposure as a credential of sorts that would be helpful in an FBI career.
I can see for Europe where their experience is quite different. You can potentially pick from 1 of 5 different countries for a 3-4 hour Saturday road trip.
You can be in France, Luxembourg, Germany, Belgium, and the Netherlands...
Whereas, in a 3-4 hour jaunt for me, I can decide whether I want to see Columbus, Cincinnati, Detroit, Pittsburg, Buffalo, or the western most burbs of Indianapolis (and I guess technically I could make it to Windsor Ontario in that amount of time, but that doesn't feel all that different either). Lol, not quite the same experience.
Don't get me wrong, it'd be cool if one could say "I think I'll go sight see in Belgium today, and then maybe tomorrow I'll drive to Germany"...but that's just not the reality here in the US with how big the land mass is.