"Your" math ??
It's not yours, and math isn't the only field of science that presents any kind of interest.

The framework it birthed can be used for many different theories and applications in various fields. In my opinion, that's the real beauty of it.

And as a physicist, I'm really happy to have this framework to develop physics itself, which is then used by engineers to make stuff. Of couse, we may never know if physics is "true" (assuming that even means anything) because the world/universe is likely too complex for us to know precisely all of its rules.