The burden of proof, when there's no proof in any direction as to what happens after death? Sure, easier to go around calling everyone else stupid when that appears to be the majority of what you add to conversations. You must be real fun at parties.

Alright, I'll bite. For the purposes of this exchange I'm going to define "you" as narrowly as possible to whatever the minimum set of conditions is for a sentient organism to exist, and the bare essentials within that organism that allows it's subjective experience to be uniquely yours. Memories change, knowledge changes, even personalities change. But at least for one being's life cycle, there is an anchored continuity of qualia that is only ever theirs, and at least unless we ever invent some sci fi technology, only ever belongs to that one qualia's body.

With that in mind the argument is quite simple. "You" were born once. If it can happen at least once, why assume it would happen only once?