Humans can create humans in some distant future

I think that all my arguments still stand, i will refute your points in same order. 1. In your argument, you have taken for granted that humans cannot exist for more than a few thousand years, that is will refute. Firstly, we won't require a billion years to create man, and lets say it does, we would have colonized an entire galaxy till then. In my opinion, a few million years might do.I mistakenly forgot to mention the assumption that we survive long enough, but that assumption is not based on mere optimism. The Doomsday argument is simply based on a probabilistic model, that itself is based on assumptions that number of humans to be born ought to be constant and we are random individuals, while we are off springs of our ancestors with long genetic history. I will take a different approach to argue that humans can exist much longer that a few thousand years. Below are the few reasons that can cause mass extinctions that are a threat to humans. i. Impact events: Asteroids, comets and meteorites striking the earth can cause mass extinctions at grand scale. But with our current technology we can foresee them years before they enter our atmosphere. We are edging towards technology that will help us deviate their path. Most of the mass extinctions are thought to be caused by these events, and we are on verge of eradicating this threat. ii. A nearby star going super-nova or gamma-ray bursts: The life on earth could be effected by a nearby star going supernova or its gamma-ray burst, but thanks to large interstellar distances, our solar system is safe for next few billion years. Sun itself will take at least 5 billion years before it goes supernova. Even Anderoma colliding milkyway in another 4 billion years is unlikely to cause any effect to our solar system. iii. Large volcanic eruptions: Volcanic eruptions can also cause mass extinctions, but till that we are well aware of the causes behind such events, those can be controlled as technology improves. Furthermore, those are a threat to civilizations not entice species, iv. Greenhouse effect and global warming: Greenhouse effect and global warming is one of the greatest threat to our existence. But that is something that is in our own hands, and we are already on it, reducing carbon footprint and moving towards green energy. So my point is that our extinction is not inevitable, we are the most dominant species here on earth, and with our superior survival instincts and intelligence we can survive longer than expectations. Yes there are technological barriers today, that is why we aren't creating life today, but this is what we do with time, improve technology, remove barriers. Size is a barrier, and we are moving towards nano technology. Like you said, we cannot create a molecule with over 3 billion bases in 9000 years, but in 15000 years maybe we can, and there is a possibility of this happening much sooner. That means the technology after that many years would have improved significantly, and we would have removed many other barriers. 2. You agree that "Life is pretty easy to create in general". Though it is still pretty complicated but you agree that it is entirely possible. You also said that in minute details its not easy, that i do not object. But i will go on to say that its not easy but with rapidly evolving technology it is entirely possible. We always start of with the simplest of model, take computers it used to be a mechanical device, think about telecommunication, electricity. All of them evolved rapidly once we had their basic model. Because once we have the basic understanding of process, we can keep on improving it as we acquire superior technologies. Now this was the while point of my argument, we understand life, we know the basics, we know most of the hidden phenomena in human body, and we need is technology, that is improving quite rapidly. 3. My statement " all we need to do is create a sperm and a female egg after all." is totally misinterpreted here. There is a difference between using sperm cells and egg and creating them in laboratory. Now creating them means, encoding all the genetic information, information of reproduction, all the processes that happen inside us, in a cell. Now this is pretty different from using a cell produced by living bodies. Now its like a robot we create, of course that is on a far inferior level but just for the sake of understanding. We program them to do things for us, in the same way we ought to program that living cell we will create on a micro level, we can program it to produce such chemicals, we can program it to do replication. So yeah, in the end all we need is technology, more superior technology, and we are already on it.