Replying to FUCK Re-edited movies!

i hate when a movie gets re-edited.  Its like as if your favorite book was jurassic park but you lost it so you go to the bookstore to buy it but the version they have has changed alot of the shit and added chapters and whatnot.  They dont re-edit books or artwork, why re-edit movies?

sorry to rant but sometimes i really want to be able to go to a movie store and buy the same movie ive seen before but when it has all these tiny changes made to it...  it just pisses me off something awful