Because that's what redistribution of wealth does--it takes money from you to "sustain the necessary things, like roads and bridges!" and then it's no longer your money, it's OUR money.
This is the mindset that we've all gotten used to, and that's what the redistributionists bank on. How different would things be if we had to write a check to the government EVERY TIME we got a paycheck, to give the government "its share".
A biblical model of legitimate human government allows for taxes.