You wont be handing over anything!
I love my pump and its only given me much much more control.
You still have to finger pick, and you still have to carb count, and you still have to tell it how much insulin to give for every second of the day, the only difference is that you dont have to inject through a needle.
You get MORE control in that at any time you can increase or decrease your basal rates, or take insulin without needing a needle. You can dose much more precisely, and it really makes every carb meaningful rather then having to round to the hearest half or full unit.
If you are a control freak then you have really been missing out on the added control you get from a pump. It doesnt do anything you don't tell it too, so don't worry about that at all.