Why people think I'm cuckoo

I love math. I absolutely love it. Doing pure math reminds me why I'm in engineering. I just finished a problem with gave us an ordinary differential equation and wanted us to prove it's integral is another given equation. Within a few steps I thought for sure it wasn't going to work. But I just kept going, following the basic rules of math, and it worked. I love it when nasty equations simplify down.