People easily identify us as christians by how we live our life and the behavior we showcase. The first time the church were referred to as christians in the Bible was in the book of acts of the apostles. And why they were referred to as christians — just as the book"acts of the apostles states" — was because of how they lived during those times and the deeds that carried out transformed then in such a way that Christ became visible through them.
One of the deeds we see in Christ's disciples is the good deeds they did to people around them. Nothing reflects the love of God more than a heart that is ever willing to show kindness to others.
Even in times where it may not be convenient for us to do so it should not be reason enough for us not to do so. Sometimes it may even go unappreciated but that should not matter to us.
We shouldn't do good only when treated nice by people. We should do it because that is what God has called us to be and it pleases Him. It is wrong for us to live without love and kindness. When listing the things that makes us Christians showing love to people should be one of them. It is one of the fastest ways we bring people into the knowledge of Jesus Christ.