I am not arguing that the speculators are not important or useful to the Bitcoin economy. Yet currently the speculators are probably out weighing the actual users of the currency.
Not probably they are.... but it's also true that very few places overall actually accept bitcoin currently. So that makes a lot of sense.
Ultimately though the market will decide what bitcoin should become..... a currency, a commodity you invest in, or a combination of both.
Bitcoin is still so early in it's infancy there's not much point in stressing out about things like too much speculation. The worth noting is that more and more merchants are signing up to accept bitcoin, so long as that continues to happen the likelyhood of bitcoin becoming more of a "currency" is more likely to happen.