Gen 6:5 And GOD saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.
Gen 6:6 And it repented the LORD that he had made man on the earth, and it grieved him at his heart.
Gen 6:7 And the LORD said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them.
Gen 6:8 But Noah found grace in the eyes of the LORD.
If it wasn't for the faith Noah had having favor in God none of us would be here. God doesn't want us to fret about the things of this world being wordly matters, but God is concerned about you being His own rising above all the evil that is in this world. We might have to live in this world, but this is not our eternal home.