If there's many poor people around me, I will reduce my gambling activity, but I didn't stop to gamble because it's already become a part of my life. I think it's fair enough since I wouldn't donate if I think it's too much for me.
Everyone have the same thought, but when it comes to reality we don't do it. We won't mind losing on gambling, but we find it hard to support a person in need. I remember few threads that have been created to support the flood affected countries. Very few have contributed to it. Even I didn't support, but for the past few weeks I've lost my payments gambling. If we all can support with a week's payment that could've made a big change. So, reality and discussion completely differs.
Not all users who donating will publicize himself if he's the one who donate x Bitcoin since most of rich users are really have high privacy concern. If you're the one who find hard to support a poor people, you can't judge other people will have same mindset like you because you only know the surface.