1 Corinthians 13:3 And though I bestow all my goods to feed the poor, and though I give my body to be burned, but have not love, it profits me nothing.
Do you envy people who have loads of money and are able to go out and do things all the time?
Do you look up to people who give to charities, support others and generally spread their money around?
If they do not have love and compassion for the people they are supporting then it seems like it is a bit of a publicity statement to me.
I tend to share with others because I love them; even when I have very little to share.