Answer:
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
Slayer of regrets, old and new, sought by many, found by few.
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
It holds no blessings in disguise. Its rhymes are aimed at your demise, it's cast only to ruin, Whatever you are doin'.
A precious fluid, thicker than water.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?