A Plea for “Its” and It's”

I never wanted to be part of the “grammar police,” but there’s only so much pain I can stand. Even in this age of autocorrect (which often produces hilarious results) , there really is something wrong about being careless with basic language.

So I am taking a stand on the correct use of “its” and “it’s.” The first one is a possessive pronoun, like “his” and “her.” The second is a contraction of “it is.”We’re not supposed to use a verb when we mean a pronoun. We don’t write “its simple” (not yet, anyway); why do we write “he followed it’s rule” ???

Yours in pursuit of clear thinking….