I just went over to debateart and copied a paragraph I wrote a long time ago about free will because I didn't feel like trying to rewrite it.
Free Will is contradictory to an omniscient God and it's contradictory to life in general whether an omniscient God exists. Freedom is one thing. Free Will is another entirely. If we had free will then we could make whatever choices we want and follow through on them. We can't for all sorts of reasons money, attitude, upbringing, place of birth, type of government in our country. There's a reason psychology exist because people are predictable animals. We rarely if ever change and we rarely if ever step outside our comfort zone. You're freedom lets you to make choices in regards to what you eat, who you marry, if you have kids, in some way where you live and what you do. Free will to make any choice you want to, at any time, no matter what, does not exist. We are slaves to nature and nurture