Answer:
The negative hero in each story
Some keep it in a dumpster while others keep it in their trunk.
A young man wants to have it, but when he has it he no longer wants it. Blade in hand he attacks it And does his best to remove it. Yet he knows that it is all in vain.
Two year-old children who throw tantrums get this nickname. So did the tsar "Ivan."
Never ahead, ever behind, yet flying swiftly past; For a child I last forever, for adults I'm gone too fast.
How did the farmer find his wife?