I almost never give out money to the homeless. After having visited places like Malaysia and India, it really puts perspective on how much BETTER the homeless in our country have it than abroad.
That being said, I recently went to a candy store and bought some apple rings. The little bag was freaking seven dollars! SEVEN DOLLARS! I was so pissed at having spent seven dollars on a little bag of candy, that I went back to look for a homeless woman who had minutes ago asked me for money, and gave it to her.