Sorry, this comment missed a big point - the money wasn't spent on Social Security, the money has been borrowed by other agencies and expenditures that owe it back.
That's like saying "Oh man, your job isn't paying you enough money, you should quit." 'But I make 80k, that's plenty!' "Oh, you uh did, until I stole all but five dollars." 'Oh darn, guess I'll quit then.'
I'm well aware that the money was dumped into the general fund and spent on other things. That doesn't change the fact that the money is gone, so saying that the trust fund has $3 trillion doesn't really help with SS's fiscal viability.
If the US government was instead a group of private corporations then the balance for SS would be positive due to the assets they have in the form of debts, just because there isn't cold hard cash there doesn't mean the money doesn't exist - the only way to get to that point is to consider the other parts of the government as bad borrowers and assume the debt will need to be written off.
That's like saying "Oh man, your job isn't paying you enough money, you should quit." 'But I make 80k, that's plenty!' "Oh, you uh did, until I stole all but five dollars." 'Oh darn, guess I'll quit then.'