By helping poor people you are helping yourself.
In reality, you will be eliminating a lot of crime which happens mostly due to poverty, hunger and other mishaps which give people no other choice but to commit those crimes.
How about poor people who cannot afford a decent death? Have you ever thought about those people? If you haven't here is a good link for you
http://www.valehospice.org
This is ran by a friend completely non-profit, donate if you can!