When we die, our aggregates- form, feeling, discrimination, compositional factors and gross consciousness , and the four elements in us - earth, water, fire and air - will start to dissolve one by one. There will be no more feelings in us of 'like', 'dislike' nor sensations of hard or soft surface, nor discrimination between friends, enemies and strangers.
Death will come to us at any time. When it comes , we lose all...we lose that 'I' we have clung to all our life. Where does this leave us at death? Nothing. Ah, but we will take with us our subtle mind with all its store of karmic seeds, which are mostly negative ones, because of the actions we perform as a result of our clinging to "I", "me" and "mine".
Hence, doing frequent/daily meditations on death will help us loosen our clinging to the "I", so that we will be ready to give up everything that resembles an attachment that stems from this clinging to "I". We will be ready to give up this cause of all our suffering.