I'm always struck by this proverb: > “Two things I ask of you, Lord; do not refuse me before I die: Keep falsehood and lies far from me; give me neither poverty nor riches, but give me only my daily bread. Otherwise, I may have too much and disown you and say, ‘Who is the Lord?’ Or I may become poor and steal, and so dishonor the name of my God. One thing I didn't see in the comments here, though I may've just missed…
i think it has been proven in studies that being altruistic gives you more happiness than doing something fun (see martin seligmans boom on authentic happiness).
HOWEVER, from my personal experience, I do not derive happiness by giving just money away (eg to a stranger who asked me), but rather through helping her at an errand or bigger problem