Helping the disadvantaged is not only an awesome feeling, but it is the right thing to do, if you are blessed enough to be able to help... and if you can afford a pizza for yourself, then you can probably afford to help the poor. Consider this: while a pizza will only feed you for a day (?) donating the price of that pizza may help to feed a family for life... Plus you need to cut back on your calories anyways. ;)
FEELGOOD INVESTOR [feel•good in•vés•ter] [noun] definition: somebody who commits money only to help people in need : a person, company, or other organization that has money invested, only to help people in need, without expecting any financial returns, but a happy face.