[kortilla]

The planet’s “life” is a human creation as well. There have been several ELEs and the planet is still “alive”.

[mellavora]

True, but I would kind of like it if my children and grandchildren had other vertebrates around.

and a bonus if the planet can support great-grandchildren. At the moment, that is no longer a given.

[kortilla]

Unless your concern is nuclear war, it’s absolutely a given that the planet can support great-grandchildren. The question is for how many and at what quality of life.

There are no science-based projections of us not being able to support human life with a population of less than 100 million still in 200 years.