We'd be a nation of the retired, of students, of military, and a selection of otherwise poor.
The demographics of those who make up the 47% are predominantly the retired, students, military, and so forth. Those who are retired were likely once in the 53%. Do you suggest they end their retirement? With respect to students - they're working on becoming a member of the 53%. They haven't made it there yet. Part of the reason behind the rise in the number of people not on the tax rolls is because of the retiring baby boomer generation. We haven't all suddenly become leeches - unless you consider all of the elderly leeches, that is.