There's a reason my nicknames are Angel or Mama... I have a tendency to bail mates out when they need it the most without expecting anything back, but I'll admit I get a rush from doing something nice.
Case 1: My best friend had her hours cut dramatically. I went down to her landlord and paid a hundred dollars off her rent that week without telling her.
Case 2: Less impressive, but two nights after I'd met my former boyfriend, he was saying that he literally had no food in the house and it was two days until payday. So I took him to the nearest supermarket and bought him a few days food. Never asked him for anything and I'd only known him two days.
Really? I don't think anything of it. I've been in the situation where I've needed a little help from someone kind, so why not pass the good karma on?
That's my view, anyway...