A Black Hole with the mass of the sun will last a wizened 10^67 years. Considering that the current age of our universe is a paltry 13.8 times 10^9 years, that’s a good amount of time.
But if you happened to turn the Eiffel Tower into a Black Hole, it would evaporate in only about a day. Which is very less time as compared to scale of the universe.
Black Hole eats everything comes within its own gravity. Even something terrible like Black Hole dies thats gives as hope to believe in existence of Black Hole.