I honestly think the first one mentioned will become a "primary" reason as soon as the first largish "came from the direction of the sun" doomsday asteroid slams into us, and makes us rethink some of our priorities.
Assuming we survive the event - and assuming it isn't "The Killer Event".
You know - something largish that takes out 3-4 major cities, and we didn't see until much too late (like the near-space flyby we just had - though it was smaller).
Then again - we are talking human society here - so even that probably wouldn't cause us to sit up and think "you know, we're kinda sitting ducks here" and do something about it collectively.
I mean, look at the number of natural disasters that happen all over the world virtually every year in the same spots, yet do people really do anything to improve their chances next time, or do they say "it won't happen again next year" - and it doesn't, until a few years later when it does.
We're such a short sighted species for these kinds of things, and the dumb thing is, we know for absolute certainty that these events will happen, but because we don't know when, for some reason we decide to put off what we should be doing NOW, because when it happens, we'll either not survive the event (and everything we have ever done was all for naught - a footnote at best), or what remains won't have the means, perhaps ever, to rise to a similar level of technology to prevent it happening again.
Assuming we survive the event - and assuming it isn't "The Killer Event".
You know - something largish that takes out 3-4 major cities, and we didn't see until much too late (like the near-space flyby we just had - though it was smaller).
Then again - we are talking human society here - so even that probably wouldn't cause us to sit up and think "you know, we're kinda sitting ducks here" and do something about it collectively.
I mean, look at the number of natural disasters that happen all over the world virtually every year in the same spots, yet do people really do anything to improve their chances next time, or do they say "it won't happen again next year" - and it doesn't, until a few years later when it does.
We're such a short sighted species for these kinds of things, and the dumb thing is, we know for absolute certainty that these events will happen, but because we don't know when, for some reason we decide to put off what we should be doing NOW, because when it happens, we'll either not survive the event (and everything we have ever done was all for naught - a footnote at best), or what remains won't have the means, perhaps ever, to rise to a similar level of technology to prevent it happening again.