The rest of mankind who were not killed by these plagues still did not repent Revelation 9:20
John MacArthur writes about this age: "There is a sense in which the present age is man’s day; he is free to do what he wants within certain limitations. It is also Satan’s day, during which the “god of this age” (2 Cor. 4:4) has been granted certain liberties within the parameters of God’s purposeful, sovereign tolerance. But God will not permit the present state of affairs to continue forever. He will end man’s day, overthrow the usurper Satan, destroy the present evil world system, and establish the earthly kingdom of the Lord Jesus Christ. That future time of judgment is known, appropriately, as the Day of the Lord. That day involves a complete renovation of the universe and the earth by judgment and restoration."
The following seals continue to bring judgement on man and yet, he doesn't relent and admit his errors. I'd like to say that I don't recognize that trait/stubbornness, but I see it when I look in the mirror. There's still a rebellious nature in me and I look forward to the day when my eyes are so focused on Him that I finally relinquish control!
Join me in reading Revelation 9 and be encouraged!