Without even going into the unsubstantiated assertion with #1, your comment on number 3 shows a dramatic misunderstanding of how compounding effects work. You can't use the last 20 years to linearly project like this. It is true that most scientists agree that humanity will likely not go completely extinct, but it is also true that most scientists agree that many, many individual humans will be impacted. It is tough to say just exactly how humans will be impacted, but think famine, war, major societal upheaval.
Without even going into the unsubstantiated assertion with #1, your comment on number 3 shows a dramatic misunderstanding of how compounding effects work. You can't use the last 20 years to linearly project like this. It is true that most scientists agree that humanity will likely not go completely extinct, but it is also true that most scientists agree that many, many individual humans will be impacted. It is tough to say just exactly how humans will be impacted, but think famine, war, major societal upheaval.
Here's a citation if it helps: https://academic.oup.com/bioscience/article/71/9/894/6325731