Bitcoin's acceptance amongst individuals and households is spending like wild fire, because of the various advantages it poses. Now comes the question; would you rather adopt Bitcoin as a tool for spending or saving? Yes, I'm guessing you'll say you use it for both. If your usage is going to be weighed, which side would unbalance the scale?
First of all, Bitcoin is not a tool, but rather an asset. Because there is actually a big difference between a tool and an asset/currency. And as such, in regards to the question you just asked above, the saving aspect of Bitcoin as a decentralized digital currency can never be overemphasized due to the profit maximization investors who hold on to it long term may stand to gain, far higher than every other investments ever found in the world.