Kurt Vonnegut, “Breakfast of Champions; or, Goodbye Blue Monday”

“Gilgongo!” was about a planet which was unpleasant because there was too much creation going on.

The story began with a big party in honor of a man who had wiped out an entire species of darling little panda bears. He had devoted his life to this. Special plates were made for the party, and the guests got to take them home as souvenirs. There was a picture of a little bear on each one, and the date of the party. Underneath the picture was the word:
In the language of the planet, that meant “Extinct!” People were glad that the bears were gilgongo, because there were too many species on the planet already, and new ones were coming into being almost every hour. There was no way anybody could prepare for the bewildering diversity of creatures and plants he was likely to encounter. The people were doing their best to cut down on the number of species, so that life could be more predictable. But Nature was too creative for them. All life on the planet was suffocated at last by a living blanket one hundred feet thick. The blanket was composed of passenger pigeons and eagles and Bermuda Erns and whooping cranes.