Because the government WON'T give 'em back AND it'll find a way to make the rich richer. 
That's the frightening situation that I believe that we're in right now;
Our free-market capitalism system is broken because of waste and greed.
Our government-run/funded system is broken because of waste and greed.
Through it all, somehow the very rich continue to stay very rich, the middle-class seems to be shrinking, and the poor are really, really, stinking poor.
There is always a money trail and at one end are the few rich and at the other end are the many poor, regardless of which system is put into practice.
If the waste and greed could be eliminated, I think either capitalism or socialism would work just fine, but the common denominator of waste and greed is sinful people.
God's been trying to deal with them for thousands of years...