Answer:
A young man wants to have me but when he has me he no longer wants me. Blade in hand he attacks me and does his best to remove me. Yet he knows that it is all in vain.
What has to be broken before you can use it?
With three eyes and as black as night I frequently knock down ten men with a single strike!
I am milky white and scares people.
What starts with an 'e' and ends with an 'e' but only has one letter?
No matter how little or how much you use me, you change me every month.