I've got more than I can spend right now. I'm not hoarding them as a speculative investment but rather because opportunities for buying things I want are still limited.
This is what I think is going on! If you think too many people are hoarding, then offer a compelling service or attractive goods for sale that will compel them to spend! The other way to look at this is that there is nothing worthwhile to spend bitcoins on, so people hold on to them passively, without really thinking about it.