It will be obvious fifty years from now but until then most people can't see it when they're in it. It's comical, tragic and primed to collapse pretty catastrophically. As luck would have it, this decline is timed to coincide perfectly with major demographic change and radical climate shift. Did I mention about a hundred other natural pressures like super-rust and resource conflict all coming to a head around the same time? It couldn't be worse if somebody planned it that way.
Stuff like this would normally sound insane but after thirty years of watching televitavision, most just don't know any better. Men can get used to nearly anything no matter how crazy if there is a consensus. I believe we are getting to the point where nature then weighs in on the argument and essentially slams the entire civilization into the garbage tip as fundamentally unsound.
Nearly all the major civilizations we know of collapsed around the same time as rapid shifts in the natural world. The truth is, declining societies cannot weather tiny little bumps without falling over and breaking like cheap china plates. The first seige and sacking of Rome was almost an act of mercy.