Well, the OP said "rapid decline". This is a gradual non-improvement, which is not the same thing.
Also, does going to school 7 days a week increase learning? I can sit in front of my computer and type stuff for 24 hours straight. Doesn't mean the result is any good.
Also what I have noticed with myself ( I had a decadent phase in life, moved on and now look on "friends" who stayed where they were) - decadent consumerism might not look as bad when you start doing it. But it erodes your soul it makes you weak and timid. Arm the lumpenproletariat with high tech - and you won't get "a little bit weaker" society - you get idiocracy.
A human to be happy must play hard, work hard and love hard. This is a virtue that most everybody is abandoning these days. I'm not advocating for repression (like China, India or western world of old), I'm advocating that we don't forget a passion in our lives and that we do not fail to show it to our children. Else everything is in vain.