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.
I am the noblest musical instrument
Born in the ocean and white as snow. When I fall back to water, I disappear without a trace. What am I?
Glittering points that downward thrust. Sparkling spears that never rust. What am I?
I break down buildings, I crumble mountains but you can't see me. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.