exactly ^. The first central question is "how is it possible that we have any experience at all?" That leads naturally to the other important question "who is the observer that's aware" i.e. who is the "we"/I that is aware.

It's telling that science has made incredible progress (e.g. in the last 100 years) but on questions such as these above, we know little more than people knew then. Although we do know a lot more about the mechanics of what and how we experiences things.