First you'll have to tell me what you mean by "Aikido" - if you mean the spiritual/philosophical goals espoused in "Take Musu Aiki" than take a look around - there are any number of training systems that don't involve physical practice of a martial art.
Now we're getting into a "you first" thing...
I think one of the areas of confusion here is that (as I've stated elsewhere)I believe the goal is not a defining feature of a budo. Most true budo aim to achieve the same higher goals, so therefore I consider the path (michi) to be the defining characteristic of any art. It names a road, not a town.