The Angel of Death never greeted a person, nor asked their permission to take their soul except for the Messenger of Allah (pbuh). The Prophet agreed to leave this world because he was told that Allah wished to meet him. Can you imagine? SubhanAllah.
When Sa’ad bin Mua’adh (ra) died, the Throne of Allah shook with joy, so happy was Allah to meet with him. When Allah is happy to greet your soul then death is a mercy.
What about us? What are we doing to earn the happiness of Allah? Will Allah be happy to take our soul back to Him?