Kindness

Everybody has their type of kindness. And I think kindness is often mistaken by others as a weakness, or an opportunity to manipulate.

Let's say you have a project assignment that is still halfway to finish, and you just realized you need to submit it by midnight on that day. 

You know you have enough time to complete it, but you're just too lazy to do it especially when you know there's this one friend that could not say no to help. 

You called him up and told him about the assignment that is due, and you know exactly that he will not refuse. 

He said yes, and he did helped you out.

 Now, you get what you wanted, project's done, and there you go. You have just taken advantage of his sincerity. 

Why do people do this sort of things? Do they just care about themselves?