It's a works mindset that wants to do the Work and be justified by their efforts... They declare that people who depend on the gift of Gods Atonement for their eternal justification are lazy..
As for the desire to die after we have come to the knowledge of salvation and have accepted the wonderful gift of God,, It is understandable that we wish to be with Christ ASAP and we who love Gods perfection yearn to be perfected.. That will happen in an instant in a twinkling of an eye at the resurrection..
But Gods will be done.. If you are a true Christian you probably know that the field is large and the workers are few, So God will probably want you to live in this world for a time to share the Gospel with others who are destined to be Brothers and Sisters in Christ in eternity..
Philippians 1: KJV
20 "According to my earnest expectation and my hope, that in nothing I shall be ashamed, but that with all boldness, as always, so now also Christ shall be magnified in my body, whether it be by life, or by death. {21} For to me to live is Christ, and to die is gain. {22} But if I live in the flesh, this is the fruit of my labour: yet what I shall choose I wot not. {23} For I am in a strait betwixt two, having a desire to depart, and to be with Christ; which is far better:"