* rich people spending money==great investment into the economy and we need to give them more so they make the economy even better
* poor people spending money==mindless consumption, it's a bad idea to give them money because they are wasting it anyways
Sure, government spending can be wasteful. But it's also generally going into the economy. It's buying stuff from companies who use the revenue to pay their employees and supply chains. It's paying government employees who spend their pay on places to live, food to eat, entertainment, etc. Some folks act like that money disappears. Waste or not, governments aren't generally hoarding cash, they're spending it.