Body & Spirit

I pondered this idea with MH, hereafter to be referred to as "The Help" mainly because I've called him my driver and recently he's done some janitorial work around the house. I was thinking that the mind, spirit, soul whatever is too closely linked with the body and it's chemistry to be separate. You have a lobotomy, you change. You're not the same person.
I go back to sci-fi and how it leaves out the things that make us "US" that are related to hormones, brain chemistry, medication (or lack thereof), and low level pain from parts of the body that make us grumpy. In Freaky Friday, mom gets transferred into daughter. But what of the adolescent brain development and raging hormones? Or when the angry woman gets transferred into Capt. James T. Kirk and he gets all effeminate, why? Did a shot of estrogen come along for the ride? Then there is the brain software transferred into computers, robots, etc, which lack the signals (most of the time) to tell us that our big toe itches, french toast would hit the spot, it's that time of the month, we're tired, that music is loud, So-N-So is coming and she got on my last nerve, etc. In that way wouldn't the electrical transfer be something akin to transferring a Mac program to at PC or a Palm pilot?
Why does any of this matter? Well it does relate to the "resurrection of the dead" part in belief. We need this body to raise up, because so much of who we are, what temptations we struggle with (crosses to bear), is tied up in the physical form.