Why must we remember that God is good? Because we are his people. We did not make ourselves. We did not choose him to be our God. He created us and chose us for his eternal good pleasure and our everlasting joy and blessing. We are sheep. He is the good shepherd. The thief comes to steal, kill, and destroy. But our Good Shepherd, Jesus, came to give us life. Abundant life. More than enough life. Life that overflows our being into eternal praise.
If God is good - and he surely is - praise him!