Quote from CaptainObvious:
Oh man, I want to say don't do it. Karma does matter and the road you're embarking upon will slowly eat at you because at heart you're a decent person. Believe me, I have and can be a one way prick like nobody's business, but it takes a toll on you brother. It takes a toll.
Am I saying you should surrender to the mob? Absolutely not, but fight it with what you know is good and right. And please, do not give up your charitable contributions. Sometimes the giving is the only thing that really matters in my life.
You can stand your ground without being a one way son of a bitch. It's hard, but it can be done.
The givers are not rewarded in this society. Only the takers are. The deck is stacked against being responsible and giving. Thus, I would be stupid to continue doing it.