I am well aware that vim comes with a crude autocomplete built in. It is just not anywhere near the same class of usefulness as IDEs' autocompeltes - YCM is. He

I am well aware that vim comes with a crude autocomplete built in. It is just not anywhere near the same class of usefulness as IDEs' autocompeltes - YCM is. Hence just bite the bullet and install YCM or you will end up moving to an IDE in the end anyway.