If you think carefully about Descartes' "I think therefore I am" type skepticism, and approach your stream of sensory observations from such a skeptical point of view, you should note that if you really were just one branch-line in a person-tree, it would feel exactly the same as if you were a unique person-line through time, because looking backwards, a tree looks like a line, and your memory can only look backwards.

I like this way of explaining how MWI all adds up to normality, and I'll use it in future discussions.