You end up leaning the bike automatically. When you stand beside the bike and just try to lift it, the weight is too far away from you. It's like trying to pick your engine up off the floor with your arms outstretched. You need to pull the weight in closer to your body.
I've used some center stands on other bikes that were very very easy to use. But then, the designers worked them into thhe bike during it's initial design phase. The Harley item is clearly an afterthought.