it is better to have never been/exist

"We are a way for the cosmos to know itself" - Carl Sagan If we did not exist, there would be nothing to admire or learn the cosmos. Without a creature with the understanding that we have, nothing would know the beauty of Euler's Formula, how galaxies are born, what is the awesome power of a black hole, what is pi, how calculus works, ect. These things would continue to exist even if we didn't, but without us, there would be nothing currently to our knowledge that could understand these things. Humanity can be a benefit to all life on earth. An example of this would be if an asteroid capable of causing a mass extinction event, was flying towards earth. Humans are the only creature on this planet capable of realizing that the asteroid was there, and we are the only ones who could have any hope of preventing it from eliminating all life on earth. The asteroid could effectively be deflected by several nuclear devices. Now I assume that earth not getting hit by an asteroid, is preferable to it getting hit. Another example of benefits humans contribute to earth, is that with our understanding of science we can help nature in ways it would have otherwise not have help with. Humans are capable of finding out diseases, stress, and several other problems that occur in nature, we are also capable of helping nature with said issues. We have learned about rabies and are the only creature capable of treating it. Now I assume that treating rabies, is preferable to not treating it. The good outweighs the bad on average. Humans have shown from time and time again that it is possible to put aside differences and work together. While humans haven't been able to get a constant state of this across the world, we have been able to have it happen in small occurrences. This ability to put aside differences is just as much a part of human nature as violence. Effectively humans while capable of causing great pain and violence, can also cause happiness and cooperation. It is important to note that there is there is on average more happiness and cooperation than pain and violence. This can be notice by the fact that a small percentage of people commit crime. This can also be notice by the fact that majority of people don't suffer from depression. If pain was something that ended up being greater than happiness, then most people wouldn't ever feel happiness without it getting drowned out by pain. Life is potential. With every life, there is potential to do something. This potential is the reason why we live life. With our potential we can do good things, bad things, and varying shades on neutral. If I was to end my life today, I would lose the potential to do anything. Even if I was in extreme pain and misery there is always the potential for the future to be better. In the worse case situation imaginable, there is guarantied a chance that it will be better. This chance can be absurdly low (like so low that in the entire existence of the known universe, it would be unlikely to happen) but it is still there, and because of this chance, someone can find the meaning of life and existence. Trying to prevent intelligent life is futile. Since evolution has produce a creature like us, it will do it again. If all humans were to go extinct or never existed, monkey and apes, according to macro evolution and current primate social factors, would take our place. So if we were to end our existence, how would we get the future intelligent life to do the same? Theoretically you could kill all life on earth, thus preventing earth from having organisms evolve into intelligent life, but even that would be futile. Life, if occurred from abiogenesis before, it could do it again. Thus life will again come into existence, and then eventually become intelligent provided the conditions. In addition, with all of the planets in the universe, there is bound to be one already with intelligent life, so killing all humans would not even end intelligent life in the universe. This is my opening argument. I will be looking forward to the rebuttals and reinforcement of arguments in round 3.