That 5 billion Doge/year does not compare to the billions of Doge traded every single day. It is a dilution in the order of 5% and reducing for a coin that can change value an order of magnitude overnight, so there really is very little influence from it.
Remember - Doge is 2 months old and it has attracted 10x more money in that period than the amount you are worried about - for a whole year! With Doge being accepted in more and more places and for more purposes and by more people, that trickle of Doge after the initial 100B Doge have been released will be insignificant.
This has been said many times and by many people and the official decision has been made by the Devs to allow this due to the expected small consequence (or even benefits), so why are you still belly-aching about such a minor issue?
Of course, you are free to invest in any coin you like - replace one of the 3 best established coins on the planet for an obscure coin - fine, it is your money. But why come here every day to tell us that you do not like Doge? You are in the wrong place or are you a troll?
I think it will be time for the "Ignore User" link one more time, it will lighten up the forum significantly...