So, they earned with their hardwork and brain, it doesn't mean that they should remove poverty of other lazy brainless humans

You know what the problem is with economic inequality? Those who have the power to do the right thing more often than not don't. They don't cover the health insurance of the employees that work for their companies. They do not pay them a living wage, like in the case of Walmart for example, but instead teach them how to survive off public assistance. They use their money instead to bribe politicians to pass laws that benefit them monetarily, or they lobby lawmakers to past stricter laws that imprison more people for non-violent crimes, such as the private prison industry.

The real problem is not that people are poor, it's that those in power have nothing left to want, nothing left to strive for except more of what they already have, that being power and money. So they instead work towards that end. As you gain power, through money you make more money which allows you to use more power and the entire time, those who are being treated so unfairly fall deeper into poverty.

Also, in many situations, those who are the richest would not be so except for the fact they were born in the right place, during the right time. If Bill Gates was born in a poor country, he might be one of the top entrepreneurs of that country, but that also might mean that he was selling oranges on the side of a road.

Consider this as well. There are so many pairs of pants, or cars, or whatever someone that has accumulated great wealth might buy, the money they accumulate ends up not doing anyone any good because it's not put back into the economy. So everyone ends up suffering where if they paid their employees that work for their companies a living wage, a fair wage, those people would spend that money, bolstering the economy creating more demand for more goods which creates more jobs.

People who are a success shouldn't be punished for being so, but that also doesn't mean that they should stand on the backs of the people who do the real work. They shouldn't steel from their own employees so that they can make more money, which really is a type of theft. After a certain point it becomes a serious problem. Throughout the entire history of the world, it has been more common that the disparity between the rich and the poor has caused the rise of revolution, wars, political corruption and worse. In the United States alone we see a current situation where politicians do the bidding of the people who contribute to their campaign funds the most, and that being corporations and rich individuals through superpacs instead of representing whom they are suppose to, that being "we the people" and it only gets worse every year.

That’s why I don’t donate.