@Builder,
Having people at the top getting richer quicker while the people in the middle and bottom stay the same or advance slowly does not mean the middle class is disappearing. It means it is still there, more or less keeping pace with the times, but the rich folks are getting a greater percentage of the goodies. The middle class still has their houses, as will their kids. The middle class will still have multiple cars, as will their kids. The middle class will still live longer lives than their parents, on average, as will their kids. It only means that the small percentage at the top with the big money gets even bigger money-it doesn't mean that the middle class is disappearing at all. Your failure to understand this, after pages and pages of arguing about random statistics and nonsense conclusions to be drawn from those statistics proves that you are here not to discuss, but to scream the Sky Is Falling then turn obnoxious and snarling when it turns out the sky isn't.
By the way, one of the marks of middle class life is having your kid go to college if he wants to. The following is the percentage of people between 18 and 24 enrolled in college, from 1996 to 2012.
1996.....35.5%
1997 .....36.8%
1998 .....36.5%
1999 .....35.6%
2000.....35.5%
2001 .....36.3%
2002 .....36.7%
2003 .....37.8%
2004 .....38.0%
2005 .....38.9%
2006.....37.3%
2007 ......38.8%
2009 .....41.3%
2010 .....41.2%
2011......42.0%
2012......41.0%
Doesn't look like a disappearing middle class to me. Or anyone else.