That's not what's meant by "free will" in the context of Christianity.God gave man will, but it isn't "free." There are consequences for our actions.
Christians typically shift the blame for failures and shortcomings in the world to man and devils. If possibilities for man are limited in any sense, you need to blame the omnipotent and omniscient one that chose to make him that way, not man himself.It believe that it is not that God is not able to be in the presence of a sinful man as it is that a sinful man would not be able to abide with God.
Why would that be necessary for an omnipotent god?God created this word as a place for us, His children, to learn, grow, have experiences, and strive to become more like him.
Then you are in a small minority of Christians.I do not subscribe to the notion that this life is an audition process for an angelical choir.
How is that worship? I have tried to emulate a variety of role models in my lifetime, but worship none of them.By doing our best to become more like him and learn about him we are worshiping him. The best compliment you can give some one is to strive to emulate them. We worship God by trying to seek out his will and trying to do as he would have us do.