[Perndog]

The electrochemical interactions in my brain make me say this:

1. I don't have a "soul." I have a mind.
2. My mind lets me choose what I want to do - thus, I have free will.
3. If you disagree, I will demonstrate my free will by using it to kick you in the nose.

In seriousness,

1. There are a lot of things that have hardly been touched by science - it has a long way to go before it explains everything, and free will is one of the most cryptic issues.

2. It is too foreign to the understanding of any human to conceive that he doesn't actually decide what he does. No matter where philosophical debates lead us, all but the most rank materialists will strongly believe in free will.