How do you know this? Did you die and come back at some point? Do you have a close friend who did? If not, then what you believe is as much a belief as what others believe.
If you had a real scientific viewpoint, wouldn’t your opinion be more along the lines of “not enough evidence”? I thought science was about facts, not about dismissing something just because you don’t know.
I’ve taught my cats a couple of tricks, and I think they have the same kind of viewpoint – here’s a great way to get a kitty treat!