Why doesn’t anything stop? Why does everything change, passes older and pass?
Allah, who has infinite power, knowledge, will, art, skill and love, wants to show the abovementioned characteristics on limited number of particles and objects whose time and space are limited. Of course, those unlimited attributes require constant change, transformation and movement one after the other in order to be manifested in limited objects.
Under this movement and change, the development of creatures and their abilities arising from their potential induce in their Creator a unique, divine and glorious satisfaction, a sacred pride and pleasure we can never know.
Since our Creator has infinite wisdom, He wants to get thousands of different purposes from a single creature He creates. This happens when that creature enters different states; the name Shafii requires disease, the name Rezzak requires hunger, the name Fettah requires concealment, etc.
One of the purposes of the creation of the universe is to feel and understand the stability, eternity and satisfaction of the afterlife and to create a real desire for it. He makes the particles and everything that they make up flow, like a river current, towards the sea of the hereafter. Opposite things make each other better understood, like dark and light, cold and hot, fatigue and vigour make each other make better understood.
A very rich and big company’s goods surely do not remain the same at a promotional stand. Since that fair is limited in time and space, the ones whose meaning and wisdom are understood will be replaced by those that express other beauties.