Christians: Predestination? (Earth, salvation, elder, choices, choice)

[*Paul*]

In the bible God definatly predestines some people to something, it can't be escaped if you are a bible believing Christian:
Rom 8v29-30: For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified
Eph 1v5: Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
But do any of these say that God is the cause of everything that happens? No. Why would Jesus instruct us to pray for God's will to be done if it were already being done?
Some Christians believe we don't have a free will, and that everything that happens it is because God predestined it to happen, Martin Luther taught this as well as many other of the wonderful reformers. I have nearly been convinced of this a few times when I read their arguements but it makes the scripture contradict itself too much.

Of course there are many more scriptures than this and the believers of this system are able to make quite an argument for it.