As many have pointed out, we are debating whether humans, as a species, have a reason to live. Not as individuals. This is what I will be discussing. I don’t believe we have a reason, I believe we have many reasons.
Firstly, there is proof that we, as humans, have harmed the Earth (An Inconvenient Truth is just one good example). So I propose that if we can harm our planet, we can also help/heal/save it. And that, in itself, is a good enough reason for humans to live. To undo what we have done. To redeem ourselves as a species. And this, in term, might lead to saving other planets.
Secondly, there is the innate human need for Discovery. This is what has driven us since we formed as a species(given you take Darwin's theory of evolution as true – 200 000 years ago). From the primitive "Find out a better way to hunt/collect food" to the contemporary "Find out a better way to earn money, fame or whatever you hold dear". From the invention of the wheel to the printing press, radio and theInternett. Rising from the bottom of the food chain to its top, without gaining any physicalstrengtht, we can safely assume that humans are, overall, superior to any other animal on the planet. This, on its own, could mean that we have more of a reason to live than any other mammal, insect, bird etc. Let us, however, take into account the bigger picture. Would the universe be affected if the people seized to exist. Probably not. But we cannot know for sure, unless we survive for long enough to find out. Maybe we will discover a way to influence the cosmos. And the inherentcuriosityy of humans will, hopefully one day, enable us to do just that. Give us the ability to influence everything, for better or for worse.
Someone can also argue, that all the individual reasons of humans (collective reasoning, if you will), are a good enough...reason, on its own, for us to live. But I am not that someone.
Thank you for reading.