When the government spends money, money is created. When it collects taxes and other fees, money is destroyed. If insufficient money is created to maintain aggregate demand, the result is that supply is diminished, unemployment increases and so does poverty. If deficit spending and the resulting money creation is necessary to maintain aggregate demand, then it must be done or else the result is wasteful idling of productive capacity and wasteful unemployment.
During the recent economic crisis, the big threat has been deflation as people are snowed under an unsustainable debt overhead. Their money is not spent in the economy, instead it serves to "deleverage" and thus this causes a decrease in aggregate demand. Such is deflationary. When deflation happens, the so-called value of money increases and debts become heavier. This is what's been happening in Ireland, where they do not have a fiat monetary system and have chosen austerity and promoting emigration over sensible economics.
If there are deflationary pressures, creating money is a way to counteract such pressures. It's not stealing. There's definitely a problem when the state chooses to give all the new money to bankers and the super-rich as they've been doing disproportionately.
If governments decide to not create money and this causes unemployment, then the government is directly responsible for that unemployment and the many problems it causes. Unfortunately, as we are in the neoliberal era where mass unemployment is considered to be an acceptable policy tool, governments are not held properly accountable for this as this is considered to be part of the natural state of things thanks to unremitting neoliberal propaganda that never ceases in its intensity.