Incentives, Make-Believe Money, and Pretend-to-be-a-day-trader Day

I worry sometimes, folks. Usually about things other than Bitcoin, because it needs time to mature and make its own mistakes. But still, sometimes I worry about it.
My biggest fear for Bitcoin isn’t it flopping because the market doesn’t support it, because that simply means it isn’t  wanted by the populous. My fear for it is it not being used. What good is a currency that just sits in your wallet all day, every day, forever? I mean, it might as well be a piece of paper that says “I am worth something”  at that point.