satelite can be a space garbage which move very fast. if it crash with another satelite can damage it. the garvity will pull nearer and nearer into the earth. in the atmosphere it will burn but still leaving material. without control satelit can fall in to the earth ungess. it's lucky if satelite fall into the ocean, especially in Pacific Ocean which the largest water. It can make big wave and earhquake, but if it fall in the land with a lot of people it make bigger disaster.
So, goverment must take the responsible to avoid the disaster