If you loan things to people, always expecting to get something back, should you get some special praise for that? No! Even sinners lend to other sinners so that they can get back the same amount!
“I’m telling you to love your enemies and do good to them. Lend to people without expecting to get anything back. If you do these things, you will have a great reward. You will be children of the Most High (God). Yes, because God is good even to the people that are full of sin and not thankful.