Because he is a loving God. You have already stated that if you knew, you would fight against whatever it is that you might have done. How would this be loving if he would tell you, just for you to fight against him?

So God wouldn't tell us about our future act because He is all loving. I don't understand.

Sorry, I edited that one above.

We are not talking about fighting but a paradox which is the result of foreknowledge, our knowledge of foreknowledge and free will.

There isn't a contradiction, and I have tried to explain it as well as I could. It wouldn't matter if you "knew" what you were going to do and then after you knew, rebelled against it. God already would know that as soon as you knew, that you would do the opposite, so he also knows that. A human cannot outsmart an omniscient God.