Man is born with the propensity to sin. No one is born "sinful." As adults, we can choose to sin or choose not to sin. No one is a slave to sin. We can become volunary slaves to righteousness by choosing God whose death on the Cross made that choice possible. But God does not choose for us.
By nature, mankind, after the age of reason, commits sin. Job did, yet in God's eyes he was "perfect." It is up to God to see us as we really are in our hearts, even though we all have sinned.
So, given this overwhelming evidence that man is a sinful creature, where do you think man will go if man does not repent?
But you will say that man cannot repent unless God gives him repentance, so it's not man who is repenting but a robot who is programmed to repent.
" For who maketh thee to differ from another? and what hast thou that thou didst not receive?" -- 1 Corinthians 4:7 "Blessed is the man whom thou choosest, and causest to approach unto thee" -- Psalm 65:4