Here's a factual statement and two arguments about Social Security.
The factual statement is that under any retirement system, the amount of America's national wealth devoted to the elderly is going to increase, for the simple reason that the elderly percentage of the population is going to increase. Today, about 13 percent of the population is over 65; by 2030, that percentage is expected to rise to 20 percent. After that, the percentage will level off -- unless, of course, a breakthrough in geriatric medicine alters those forecasts.
Now to the two arguments.