Your statement was that they pay "the least amount in taxes", which is 100% not true.  46% of Americans don't even pay taxes and many get money back. 
If you meant that they pay the least percentage of their total wealth (accumulated through saving), so what if that were true (which it isn't)?  Your statement seems to say that the government  should be able go in and assess how much all of our assets are and take a percentage of it as if they allow us to have part of their money.  People pay on their income at a much higher percentage when they make more money, PERIOD.  They also buy more and pay much more in sales and property taxes. That is more than enough than the government should get.