Welcome to the “empty nest” club. Of course, they always come home, sometimes for longer periods than other times. I do have one word of advice: “pets”. A dog, a couple of cats, chickens, even... whatever. The value of having other living beings around you (and that depend on you) cannot be overstated.
Meanwhile, there’s always cell phones, Skype, email, etc.
Skype is really cool.
Hate to break this to you, but you got the bronze. See post 24.