I think I'm not going to give a homeless person the food they requested.
Why wouldn't you give a homeless person some food?
Because I have my own problems to worry about.
I am sure you do have problems of your own but it is still kind to help others in need like the homeless. If everyone worried about their own problems and ignored the homeless, there would be a lot more suffering in the world.
I'm not going to be manipulated by this.
I'm not trying to manipulate you, I'm just saying that the homeless need help more than almost anyone.