Why does every one live by the "Bible" when it's only part of the Bible. King James
took books to make the Bible fit him and his followers and kingdom what he wanted?
This is a good question. One that has enormous documented debates. As far as "Why does every one live by the "Bible" when it's only part of the Bible?" If by this you mean there are many other books found other than the ones in today's Bible, you are correct. My research shows that it has been documented there are over two to three thousand other books and documents from early writings that were found in places such as where the "Dead Seas scrolls" at Qumran were found. There, all of the books of the Bible we know as today (Except Esther) were found. However, as stated, there were many many other writings there also. To some, it may appear that it is "half the Bible" because theses other documents were not put into today's Bibles.
The "church" did not decide how the Bible was put together. The majority of scholastic writings show that the consensus is that it was God who decided through His inspiration through man as to what books were to become "His word". After particular study on this, I must agree that God preserved His word perfectly. This is in fact the primary Christian belief;
"The words of the LORD are pure words, Like silver tried in a furnace of earth, Purified seven times. You shall keep them, O LORD, You shall preserve them from this generation forever." Ps. 12:6,7
"But the word of the LORD endures forever" 1Pe. 1:25
There are those that do not believe the whole Bible is the sacred word of God. Orthodox Jews for example only believe in the Torah, the Pentateuch (the Law). Which is referred to as the 5 books of Moses. However, Mainstream Christianity has accepted God's preserved word in the 66 books of the Bible to be His underlying truth, written by man but inspired by God.
As far as the second part of your statement, that King James "took books to make the bible fit him and his followers...." I will agree that the "King James" controversy is significant and that that reasons for writing the "King James Version" were questionable (this statement should spark some controversy) however, I do not believe he "took books" he wanted. The King James version has the same 66 books (39 old testament and 27 New testament) that are in other versions.