The question you raise touches upon philosophical and metaphysical considerations. The concept of a world without suffering or a perfect world is a topic that has been pondered by thinkers throughout history. However, it's important to note that the existence of suffering and the nature of our reality are complex issues that have no definitive answer.
In the context of our current scientific understanding, the concept of many worlds in an infinite universe refers to the multiverse hypothesis. This hypothesis suggests that there may be multiple universes with different physical laws, constants, and initial conditions. However, the details and implications of the multiverse are still highly speculative and remain a topic of ongoing scientific research.
Regarding your question about why we are not born into a world without suffering, it is challenging to provide a conclusive answer. Some philosophical and theological perspectives suggest that suffering can be seen as an inherent part of the human experience, leading to personal growth, moral development, or even the appreciation of joy and happiness. Others argue that the existence of suffering is a result of natural processes, such as evolution and the laws of physics.
It's worth noting that humanity has made significant progress in reducing suffering and improving overall well-being through advancements in science, medicine, and social systems. However, completely eliminating suffering from the human experience is a complex and multifaceted challenge that involves not only addressing external factors but also understanding and addressing internal and psychological aspects of human existence.
Ultimately, the question of why suffering exists and the possibility of a world without suffering goes beyond scientific knowledge alone. It delves into broader philosophical, religious, and existential inquiries that have been debated for centuries.