Would you be a clone that lived your life and had exactly all of your experiences? even if only one minor detail were different? e.g. earth is spelled urth. That's it. Why am I not in any of these possible realities right now? Does the multiverse, like, not exist or something? But then what's the explanation for the fine-tuning and seeming-design of the universe? We mustn't conclude that there is a designer, because then we won't be able to scientifically inquire as to some physical explanation.