Dennis Hopper and Peter Fonda in the 1969 film, "Easy Rider." (Image credit: Silver Screen Collection/Hulton Archive/Getty Images) The baby boomer generation exploded onto the American cultural and economic landscape in 1946, becoming the wealthiest generation in American history. Like the rule-breaking characters of " Easy Rider ," boomers claimed the right to more freedom to shape their lives than their parents had enjoyed. In the same vein, they have had to reinvent what it means to have leisure time, to work and retire. But though boomers (born in 1946 to 1964) haven't gloriously burned out, as Neil Young's anthem extolled, they also haven't "faded away." Their fate has got to be better than that of Easy Riders' Billy, Wayne and George. The older boomers of the Woodstock era now worry about the long-term viability of their retirement, while younger boomers (who identify more with Star Wars than Woodstock) are sweating over their retirement readiness.…