Answer:
I go around in circles, but always straight ahead, never complain, no matter where I am led.
You buy me to eat, but never eat me. What am I?
What is harder to catch the faster you run?
I am the place to turn to when nature calls. What am I?
What comes once in a year twice in a week but never in a day?
The answer I give is yes, but what I mean is no. What was the question?