We could also be completely wiped out by a stray gamma ray blast, but it’s unlikely right.
The interesting thing about these mass extinction events is twofold. The first is that they are (1) extremely improbable and (2) will continue to repeatedly happen. And they will never suddenly become more probable. The day before the Ordovician mass extinction kicked off would have very likely been just like any other normal day, even with modern tech. Somebody always wins the lottery sooner or later. The same would also be true even if only one ticket was sold a day. And tickets for the latest drawing have been on sell for about 65 million years.
Wikipedia currently characterizes it as more of a trailing hypothesis:
A minority hypothesis to explain the first burst has been proposed by Philip Ball,[100] Adrian Lewis Melott, and Brian C. Thomas ... Although the gamma-ray burst hypothesis is consistent with some patterns at the onset of extinction, there is no unambiguous evidence that such a nearby gamma-ray burst ever happened.
As a society, we are responsible for not only our society, but we also set the stage for the entire future of the human race. Though an improbable event probably won’t happen tomorrow, we can say with a certain amount of assurance that it will happen in the future.
Therefore we can and should prepare for these events.