Which is a completely absurd statement to make.
Hunger in the world, if it is solvable, is going to be solved by science.
It's science that informs us on how to best cultivate food.
Desease in the world, if solvable, will be solved by science.
It's science that informs us on how to best combat deseases.
Science is how we learn things. Knowledge is an essential ingredient in solving problems.
Except that it is.
"self experience" doesn't teach us about germs, relativity, quantum mechanics, plate tectonics, nuclear forces, electro magnetism, chemistry,... etc.
All of these things fall "outside" our day-to-day experience.
We live at the macroscopic level and deal with sub-light speeds. Sub-sound speeds, actually.
Mere "self-experience" will not lead us to understand the weirdness that is caused by objects approaching light speed.
Process that take millions of years to unfold are also completely out-of-touch with what we "intuitively" know and understand. We are comfortable thinking about decades. Perhaps centuries. Millenia, is a lot harder. Millions of years, billions of years... we can't fathom what such timespans are.
Being macroscopic objects traveling at sub-sound speeds, we also are only "in touch" with the G forces we experience here on earth. We can't fathom the force of gravity at a black hole or a giant star. We also can't fathom being an insect, where gravity is actually rather neglectable and where surface tension is actually what matters, in terms of "not falling down".
No, we most definatly learn about the natural world through science, not by merely being alive.
It is an empirical enterprise and it is the single most succesfull method available to us at this time.
Nore does it have to. Which is why I added "just to satisfy our human curiosity". Knowledge is its own reward, if not anything else.
Same thing.