I don't get what the point you want to say. Are you mean we should always hold our bitcoin and never sell it? Because if we sell bitcoin now, after 5 years Bitcoin price will multiplied 2219512x ?
The programmer (Laszlo Hanyecz) is not wrong to buy 2 pizza for 10.000 Bitcoin. I just think, if he never start to use it as a currency... maybe we can't know if bitcoin can be a currency and the adoption can't so large like this now. Bitcoin need adoption and become a new currency, it will make huge demand for bitcoin and the price will increase.