Feel sorry for yourself
Feel good about yourself
You haven't done what you planned to do(
You haven't helped another person
You haven't had any fun
You haven't taken any risks
What you did, didn't take much effort. It was not difficult for you.
You did something good for someone and did not get something for this.
You did something good for somebody else and got nothing for it in return.
If you didn't help someone so it's not cost / worth nothing
If you help someone who gave you money for helping them.
Here's an interesting quiz for you.