That was my original way of thinking too, but unfortunately I had to wait almost two years before Kwikset came out with motorized Z-Wave version of the deadbolt. So I ended up buying the Schlage and after living with it I realize that remote unlocking and locking sounds great on paper, but it is rarely used in my case. The main purpose of these locks when you get down to it is keyless entry (very handy) and being able to monitor status. How often have I ever left my front door unlocked, never, but how often have I thought I maybe left it unlocked, all the time.
You could be in your bed and hit the "goodnight" button, then all lights go off and door lock, but you don't really know if the door locked unless you have a camera or other sensor on it to make sure it is closed first (door could be wide open, with deadbolt out), so remote locking has its issues. Also the Schlage's batteries last longer as a result and I believe would be harder to pick the lock because of its design. There are youtube videos of guys picking the Kwikset Smartkey locks.
I do like the look of the Kwikset though, because it looks more like a normal lock, but the Schlage has been reliable and does what it needs to do and its still on it's original set of batteries almost a year later.