These are both reasonable points, and I’m just going to invoke the ‘out of scope’ get-out-of-jail-free card on them both ;)
You have to form a view on whether our descendants will tend to be more, equally or less ‘good’ than you’d expect from other alien species, which would imply extinction is somewhere between very bad, somewhat bad, or perhaps very good respectively.
Obviously you need some opinion on how likely aliens with advanced technology are to emerge elsewhere. Sandberg, Drexler and Ord have written a [paper](https://arxiv.org/abs/1806.02404) suggesting ways in which we could be—and remain- the only intelligent life in the local universe. But that maybe helps explain the Fermi paradox without giving much clarity on how likely life is to emerge in future.
These are both reasonable points, and I’m just going to invoke the ‘out of scope’ get-out-of-jail-free card on them both ;)
You have to form a view on whether our descendants will tend to be more, equally or less ‘good’ than you’d expect from other alien species, which would imply extinction is somewhere between very bad, somewhat bad, or perhaps very good respectively.
Obviously you need some opinion on how likely aliens with advanced technology are to emerge elsewhere. Sandberg, Drexler and Ord have written a [paper](https://arxiv.org/abs/1806.02404) suggesting ways in which we could be—and remain- the only intelligent life in the local universe. But that maybe helps explain the Fermi paradox without giving much clarity on how likely life is to emerge in future.