It is a myth that Christians think they are good people, entitled to sit in judgment over others because they are morally superior. On the contrary, a true Christian knows with certainty they are NOT good, that they are no better than anyone else... that they are rebel sinners who justly deserve God's wrath ... and that's why they need a merciful Savior who, in spite of themselves, forgives them, adopts them as His children and gives them a seat at His table.
So if a Christian points out that you need a Savior, it isn't because he hates you, or thinks he is better. No, it's because he loves you and is just like you. He shares a common humanity with you and is a sinner like you and wants you to know God's love and forgiveness in Christ.