I think a better word might be “effortlessness”, as in “unable to make an effort”. Or perhaps “optionlessness”.
If you think about it, if you are mowing your lawn by yourself, you are help-less. No one is helping you. But no one NEEDS to help you. You can do it by yourself.
Or powerlessness, although given that I recognize both qualitative and quantitative power I would submit that you are never powerless when conscious.
As I think about it, it just seems to me that the word, itself, weakens people.