You are wrong! Not proudness, strength or GDP make the nation great and survivor.
Many empires broke into pieces who were following fake principles. Even today strategies are based on strength policies. Sure, the earthly power has some significance however anything what is measured by earthly scale has a beginning and end. So, even earthly power comes to end one day. Memory and teaching are everlasting. Let’s put up the question: what kind of memory we leave and what sort of teaching we give to the next generation? If you live in a good country, nice answer can be given on country level. If you don’t live in a good country you strive to be able for giving two good answers on family level.
Do they not travel through the earth, and see what was the end of those before them? They were superior to them in strength: they tilled the soil and populated it in greater numbers than these have done: there came to them their apostles with Clear (Signs). (Which they rejected, to their own destruction): It was not Allah Who wronged them, but they wronged their own souls. (Quran 30:9)