“And He will wipe away every tear from their eyes; and there will no longer be any death; there will no longer be any mourning, or crying, or pain; the first things have passed away” (Revelation 21:4-5).
Scripture and experience teach that the “first things” associated with this present life are difficult; characterized by tears, death, mourning, crying, and pain. What God has promised is a progression toward something new; better; a place that stands in contrast to our current condition and world of brokenness. Cries for the “good old days” reflect a lack of faith in what God is doing. The very best of your memories pale in comparison to the very best God has for your future.