Nice logic you've got there. Too bad it's irrelevant. Yes, my logic is too, but in a world without logic, it's possible that we are both in a state of existence and non existence at the same time, because there is not only nothing to prevent us from existing, but also nothing to prevent us from not existing. Like a Schrodinger cat situation. The logic may be irrelevant, but it's also the best way of understanding it.
Now with the whole one thing has to come from another, yes that's a very logical statement. However, if you say logic doesn't exist, then the universe technically doesn't have to come from something, or its maker/origin point doesn't have to come from something.