What good is "spreading the wealth around."?

In my opinion it seems that if people who don’t make money because they are not working hard suddenly get more money for nothing they would just keep on not working hard, whereas if those working hard and making a good amount of money are getting taxed more then why would they want to continue working hard? It would thus discourage business competition and products would loose quality because of the lack of competition. There doesn’t seem to be much of an upside.