The Internet Oracle has pondered your question deeply.
Your question was:

> They wanted to hit im and kill im.

And in response, thus spake the Oracle:

} Violent envy between words and word forms is not uncommon.  As soon as
} ain't was born, am and not vowed to destroy it, soliciting the
} assistance of I'm.  Ain't survived only by the assistance of informal
} usage, and to this day is not accepted in formal English.  When verb
} had the audacity to declare itself a verb as well as a noun, let alone
} a verb that acts on nouns, a good majority of the parts of speech
} descriptors were in an uproar, including but not limited to noun,
} adjective, adverb, and even participle.  And while hoity-toity is just
} about dead of old age, one can't help but suspect foul play.  (How one
} got such a notion is beyond me; numbers rarely fraternize with other
} adjectives, particularly silly ones.)
}
} Contractions continue to be the victims of formism, even after Word War
} II and the Merriam-Webster Treaty.  Some, a noted statesword, believes
} formism is dead, and that we live in a kinder, gentler vocabulary.
} Formism is actually being held in an underground dictionary, known as
} the Clue Crux Cant (CCC).
}
} They has always been strongly opposed to they're, and would,
} subsequently, have similar feelings about I'm.  They recently returned
} from a three-year vacation in India, studying Hindi and the rich
} language diversity of the nation.  They claims to have experienced rich
} spiritual growth, and is now a strong advocate for abolishing formism.
} They's previous followers and enemies alike are skeptical of they's new
} stance, given they's previous public formist speeches and actions
} against words such as I'm.
}
} You owe the Oracle word peace.