Humans need to remember that the Earth has a sun that will last for another four billion years.
So humans could be on this planet for that long.
This is as long as WW3 or WW4 or WW5 does not make life on the planet impossible.
Assuming humans are here for that length of time we need to have less of we.
Seven billion is too many of we.
Two billion is enough of we.
Would someone get Greta and her cohort to get the message.