These are the generations of Noah. Noah was a righteous man, blameless in his generation. Noah walked with God.
The real miracle in this story of Noah is not so much the account of the flood, but the fact that one man stayed faithful to God in the most corrupt society possible. It was so entrenched in evil and violence that God could not let any elements of the society remain.
In this impossibly wicked culture Noah stayed faithful to God. He was blameless in a culture steeped in sin. He was a righteous man. In God's eyes he was worth being a new start to the human race... all because Noah walked with God.
I can't directly compare Noah's generation to my own. The text gives few details as to what made Noah's generation specifically so wicked and violent. For all I know, my generation is no better, perhaps even worse. But today God's grace through the gospel leaves a strong light that is brighter than just one righteous man's family. And God has already appointed a Day of Judgment under Jesus Christ for this generation. So the church must shine on until then.
We are not saved like Noah, huddled in an ark amidst the raging storm. Instead, we are left to live and walk in our generation so that God's mercy can save some more. But we must be out among them. And that is why we should not be berating our generation from the windows of our ecclesiastical arks. Instead, we need to proclaim God's good news in the gospel as we live among a generation that Jesus still wants to save.