system
Given the following post, respond as if you're commenting on Reddit:
human
Do black holes ever die? Could they intime consume the whole universe

Hear me out, obviously they could only consume where matter is but is it possible that over however long it would take that they could all form one giant blackhole?
gpt
Yes black holes die.  They lose energy by emitting Hawking radiation, and since energy is directly related to mass, they lose mass by losing energy.  Eventually they lose enough mass to not be a black hole anymore.

If they didn't ever die, then in order to consume the universe, the expansion of the universe would have to be slower than the effect of the black hole's gravity.  People have observed with a high degree of certainty that the universe is in fact expanding faster than gravity can pull everything together, so no, that wouldn't happen.