If you have worked to be wealthy or lucky to be one, you should see it as a social responsibility to help the less privileged people in the society. If I may ask, do you feel comfortable driving past several beggars on the street when you have billions of money in your account that you or your entire family may not be able to exhaust in the next 100 years?
Think about this seriously. With the so much money in the world, poverty can greatly be reduced if not totally eradicated.
If we TRULY want to there is also enough food to go around the world feeding the whole population TWICE however most of that money goes to waste. I remember back when I worked in hotels whatever was made that day either was sold or went to trash, this was done so no worker would try to "not sell" something so he can eat it at the end of the day.
Stuff like these are just least of our worries considering there are fast food joints who make a lot of money and throw the food to trash at the end of the day. This is just food, considering how much money is in the world, some people and companies have so much profits and earnings that it can make EVERYONE in the world not poor with one quarter of profits.