Bill Gates on the other hand has made a fortune, he's quit his job and his putting the vast amount of his fortune and time in to the largest charitable fund ever known. How is this a bad thing, in anyone's eyes?
Not sure he donated that big a percentage of his fortune. And since you asked, some examples of why many people think it's a "bad thing":
http://www.latimes.com/news/nationworld/nation/la-na-gatesx07jan07,0,6827615.story?page=1