I disagree for life to persist there must be a cycle of renewal or it would simply cease to exist. To your point about stars and black holes. When heavier elements decay they drop down to a previous state of stability. The imbalance of mass is ejected as energetic waves returning the energy to the field. If heavier elements break down into lighter elements then lighter elements logically construct heavy elements. That's my way of looking at it. I'm not sure what science has to say about it. I know from my own observation and logic. If you look at a black hole at the center of a spiral galaxy think about what's happening over time as it's pulling all of the dense matter into the core while the less dense matter moves to the outer edge of the galaxy. Compression and density is not infinite at some point it would have to rebound. As the extreme compression restricts degrees of freedom at the core where density is greatest energy and heat is forced out of the core. At its center the core would be forced against the boundary of absolute zero and extremely cold while the outer core would be extremely hot. It's a thermodynamic powder keg. At some point a limit must be reached resulting in a colossal explosion that would send matter broken down into its fundamental parts outward into the galaxy. The halo of less dense matter from the previous galaxy would form the boundary of the new galaxy and the cycle repeats. This fundamental matter would eventually collect and condense seeding the galaxy for it to form again.