Whatever we have mentioned above make it clear that if the dislike for death and longing for living longer and longer in this world is because of one's madness (excessive affection) or due to the thought that death becomes a barrier between his beloved things depriving him of worldly pleasures and luxuries then is unwise from the viewpoint of brain (logic) also and an unpleasant attitude from religious viewpoint too.
But if one dislikes death and desires its delay thinking that, in that case (in a longer life), he will continue to make more and more provision for his postmortem journey to the Hereafter because death close all possibilities to do good deeds in this world and hence he desires that death may not come very soon then it is a very good intention.
But if the wailing and crying and lamenting over the demise of beloved persons and to become angry on such occasions and to denounce the death is due to material reasons and thoughts then it also is wrong and undesirable. For example, to weep asking why the happiness of this worldly has been snatched from him or why he has been deprived of the comforts available from his deceased beloved relative then such wailing is also wrong and misplaced.
But if the unhappiness and sorrow and mourning is because of only the separation, like that of a co-traveler (who reaches first of all to his beloved native place) then his other companions will naturally be emotionally affected (even though the departing soul has reached his beloved place and joined his beloved ones) then also the said sorrow and unhappiness is very well, rather it is desirable that a faithful should mourn over the demise of his another faithful brother especially when the departing person was helping the living one in his good deeds which for med a kind of provision for journey to Hereafter.

Expression Of Impatience Is The Result Of Carelessness About The Hereafter
Since most of the people, especially women, are more inclined towards worldly matters they become all the more restless and agitated and go to extremes in crying and complaining, thinking as if they were to live in this world forever and imagining that the one who died has been annihilated. Had they thought correctly they would have realized that the departed person was a traveler who has reached his or her destination earlier and that he or she had to go there. Then they will not show such excessive impatience and restlessness.
Imam Sadiq (a.s.) once saw a man whose son had died. He was crying and complaining too much. The Imam told him: How is it that you are crying over this little calamity and have totally forgotten the far more hard and troublesome calamity (of the Hereafter)? If you yourselves would have been properly busy making provision for your travel to the other world, you would not have ever exhibited so much impatience and dislike over the demise of your beloved son. Your not being anxious and careful about your Hereafter is a calamity which is harder than the calamity of your son's death. (Uyoon al Akhbaar ar Reza, Vol.2, P.81)

Divine Mercies And Bounties
Similarly, the condition of a man, regarding death should be like that of the one who had been in the service of a king for a few days. In the meanwhile he gets a word from the king that you will be, at an unfixed time, be made to stand in front of the king so that you may be rewarded and honored by the king for your good service and loyalty.
Surely that man will feel happy due to this good tidings. But at the same time he will also wish that he may be called up somewhat later so that he may perform some more functions liked by the king and get more awards.
Similarly a faithful person, though he feels happy at his death which is the door to the place of rewards and gifts, also likes and wishes that the said hour may be delayed somewhat so that he may perform more worship and at the same time remain satisfied and happy when God decides to call him up, with the conviction that God is most merciful and kind and with the longing to meet the Holy Prophet (s.a.w.s.) and his Holy Progeny (a.s.) whom he respected and honored very much during his life time.