I always get the answer "You just dont understand", but I have studied currencies, economics, finance a lot.. And when youre saying that we will be using it 50 years from now I see your total lack of understanding from my
subjective view. 50 years from now I think there is a much greater chance that we will be using some kind of money measured in energy. It is portable, durable, fungible, and you can do shit with it. So no I dont think cryptos like Bitcoin, Litecoin will stand much more than 5-10 maximum 15 years. But I could be wrong, but I have a bunch of ideas that would serve a much better purpose as a medium of exchange than Bitcoin.
I also have big issues with the asymmetric distribution of bitcoin. Some entities are sitting on 1 - 10 % of all Bitcoins just for them self, thats even worse than the Fiat distribution, although this is not an argument for that bitcoin is bad and will fail, I just dont like the asymmetric distribution. Read this:
http://eprint.iacr.org/2012/584.pdf Check pg 8 and 9 for distribution of the coins.
Energy I can only use it for one thing, to power something.
That is the fairest way, early adopters had to have a lot of faith in the system so it is only natural they be rewarded the most.