The history of the world is contructed by philosophy. If you learn philosophy means you learn the history of idea. Like what you said, we have moved from the savage uncivilsed world becoming the civilised human being through philosophy. The branches of disipline in science is also has it root in philosopy.
Thus, we still need of philosophy to learn about the past and to design our future. I have full appreciate for the teacher of philosophy.
this is why Aristotle calls Philosophy "the most authoritative of the sciences", the first science, and the divine science. exactly! on point @sabjabal