I think we could put his question another way, which in my mind is, what is the 5 year plan for this coin? At that point there will be millions of quadrillions of MMXIV. Will it matter if I have a few million quadrillion MMXIV at that point?
Small minds use flat amounts. Big earners use percentages. Actual per coin price and amount of coins held are irrelevant when a system is based purely on percentage
Your question should be 'will my 5% of the total network be worth more in 5 years?' to which the answer is a resounding, and proven, yes
The reason I asked was mostly because a constantly tumbling price can give the perception of the coin loosing it's value in a psychological sense and deter new investors from buying the coin at all at some point. Anyway, it will be interesting to see how all this plays out.