>Hurr durr categories
>Hurr durr functors
>Hurr durr arrows
It feels like category theory is just intellectual masturbation for mathematicians. My differential geometry and manofolds textbooks aswell as my functional analysis text brings up concepts like functors and arrows, but I feel like it would be possible, easier even, to do these subjects without it. Are there any actually interesting results wich have been discovered using category theory or is it just a scam?