One question I'll never ask regarding Aikido: "Is that all there is?" The Aikido onion is very large and the time required to explore each layer in depth precludes ever getting to the point where no layers are left to scrutinize.
Aikido is about growth and if I let myself become stuck at one point along the path my growth will cease and I'll end up simply just "doing" Aikido. Having experienced the richness of the Aikido experience, becoming stranded along the way would be the death knell of my practice.
(Original blog post may be found here