Yep the Roman Empire was indeed claiming moral decline of it's youth
Don't laugh - they complained about late parties, heavy drinking and particularly long hair - particularly several hundred years before the fall of Rome.
Lets roll back a bit less far to what sounds like your own youth (?) the sixties.
A notorious period of "moral decline" drug use, long hair and rowdy music (again) sexual freedom, barbarians at the gates and all that!
There are a number of other periods we could mention - I'm sure you've seen these illustrations by Hogath illustrating "moral decline" in his time
http://upload.wikimed...reet-and-Gin-lane.jpg
The fact of the matter is that morality is no more or less than a set of values and customs considered proper by a particular society at a prticular point in time.
Guess what? they change - at least in part
Some people, especially those who have spent a long time in one particular set of moral standards find change difficult to accept - especially if they fall prey to the doom-mongers - In Hogarth's day preachers, today the Express and the Mail!
If you're worried about the moral decline of youth I suggest you find a way to get out a bit more and meet some - and stop listening to journalist who are only paid to make you angry and worried