Granted, I haven't been watching prices long, but it SEEMS that Bitcoins aren't any riskier than normal stock. Maybe they'll go back up to $20 each, maybe they'll drop down to $0.01 per BTC, but regular stock carries the same sort of risk.

Be nice if it was more stable, true, but I don't think it's much riskier than any other sort of investment. Just keep your computer safe from being hacked.