Things get ugly when your code grows. I had cases where I started with passing pointers to structs around directly, but at some decided that having dedicated interfaces would be better.

But as soon as you're talking interface, pointers don't work as expected anymore, because Go (at least that's how I'm explaining it in my head) passes magic interface values to functions. So you can't just change `func foo(s MyStruct)` to `func foo(s MyInterface)`, but rather you probably want `func foo(s MyInterface)`. Even though you are still explicitely passing a pointer when calling foo() and whatever you're doing with s inside of foo() is working on a pointer -- which your own function declaration doesn't even tell you anymore.

This is one of the things that confuses the hell out of me when using Go.