I don't like crossbody bags on me, I think I've worn my Hailey that way maybe three or four times in the six months I've had it when I wanted my hands free for shopping.
I usually wear it as a shoulder bag or on the crook of my arm, or even hand-carried but it gets a bit heavy that way.
Sometimes I put the long strap on it just as decoration and let it hang under the bag, it seems to look more "finished" that way. I agree it's cute without the long strap too, and that's the way I usually wear it.
Most of the time when I see other women with Haileys they have the long strap on but are wearing it as a shoulder bag.