You will have a problem paying for it. A 10 trillion dollar problem in the next decade alone.Except that we don't have a problem paying for it. So how do we justify screwing people out of what they worked for all their lives?
Not to mention, if we do screw the people out of it, the economy as a whole is going to take a serious hit.
But that's not how it works. And for the record, the rich increased their share of national wealth in pretty much all advanced nations since the 80's.That's not actually what happened in the US. In the US it was all about an organized effort to change the distribution of wealth in the nation. The rich wanted more. So they fought for the politics to give them more.
Offering a theory that is entirely inconstant with the real world is worse than useless. Why don't you look for a theory that is consistent with the facts?
Savings started to collapse in the US with Reaganomics. That was contrary to the theories in vogue at the time. Rational Expectations said the opposite would happen. Supply Side economics said the opposite would happen.
So what is the theory of why savings declined? It's really very simple: People started spending as if their incomes were continuing to rise even though their incomes had ceased to rise. They did that by drawing down their savings and then going into debt. This is normal behavior. People are unwilling to live as if they are falling ever further behind others when they are working harder than ever before. Also, the private pension system has been looted and destroyed. And people just do not put away in private savings what pension plans used to put away for them.
However that only explains the low savings rate. It is irrelevant to the investment rate. Irrelevant, in that it means nothing in any way, shape, or form. We are drowning in capital. There is no such thing in the US as a business that cannot invest because there is not enough investment capital available in the nation, or that the costs of capital are too high.
So the lack of capital is not a problem. The lack of savings is a problem, but not a problem for business investment. It in no sense explains the lack of business investment. What explains the lack of investment is Wall St directing money out of the country instead of investing here. What explains lack of investment is the lack of consumer demand due to the fact that wages are far too low.
The ultimate foundation of all of America's economic problems is that labor is extremely underpaid. The United States economy does not have a problem that does not have as a foundation the fact that labor is underpaid by at least 1/3.
And because labor is so extremely underpaid, because companies are not investing, because Wall St has become rabidly anti-investment, because government no longer has the money to invest, that is why we have the budget problems.
Now austerity is an attempt at "solving" the problem by deliberately making the problem worse. The economy requires the opposite of austerity. The only thing austerity could conceivably accomplish is a smaller national economy. That's the only thing that it has ever accomplished.
Well your theory does not add up very well.
If savings are low, by definition you have a low available supply of domestic capital for investment. The free capital markets that you seem to dislike do remedy this situation to some extent, by supplying cheap foreign capital. But as Auerbach mentioned in the text I quoted, the correlation between domestic savings and investment level among nations still exits.
Now back to the policy decisions. You have a country where consumption kept growing fast (too fast during some periods), but savings and investment continues to fall. Clearly high consumption alone do not trigger investment. What do you do? Obviously, you create policies that reward investment. You complain that "Wall Street sends all the money abroad". Well, for starters, you don't have that much domestic money to be sent abroad to begin with, as your savings rate is and has been very low for quite some time. Additionally, Wall Street wants to make money, so they will invest where there is a good return. If you want investment in the US you create policies that reward investment, like taxing capital gains lightly.
And that's what I've been saying.