There is a worth that is rationalized by the natural mind.  This self-worth is useless.  The worth that God sees in us is so much higher.  God sees our ministry, our place of service.  God sees the Christ living in us.  God sees us as those who are dying daily to self and living to Christ.  God does not want us to look at ourselves as the natural man, the old Adam, the self that is capable of sin.  He wants us to know that we have that old nature so that we know that we have to keep walking in the Spirit and dying to self, but God doesn't want us identifying with our old nature.  He wants us identifying with Christ.