Kelly, my opinion is that with the d-handle, as long as you are not over extending to reach the end of a long board, it's ok in some situations. Using any power tool with out good balance is asking for trouble. May get by with it a thousand times, but that one time is all it takes to do serious injury.
I think the older we get, the more difficult and dangerous some of these things get.
1. We get to comfortable doing them. Familiarity can breed carelessness.
2. Many(most?) of us are not as strong as we once were. It's tough to admit that, but I know in my case, it is true. Doesn't apply to you younger guys, perhaps!
3. Pushing for that last inch or so can get you in trouble.
All that said, as with any procedure, if you are not comfortable with it, don't do it!
I have found that hand tools are the best choice when I want to make mistakes at a slower rate of speed.
I don't suffer from insanity. I enjoy every minute of it.