One thing that probably has not been thought of, during the creation of BTC, is that the number of Bitcoins will be slowly reducing to zero. There will be, in some time, 21KK BTC, but what about bitcoin that get lost? I mean hardware malfunctions. Wrong address transfers. Lost passwords. Forgotten wallets etc.
Do we know, how many of all Bitcoins is in circulations at this moment? I mean we can count the number that indicates how many it should be. We however do not know how many of them is inaccessible.
One day it might be a problem, but probably not the problem of our generation. Still statistically that says bitcoin cannot survive.
Okay lets assume we have lost most of the bitcoins. Once a threshold reaches people will stop using them all together.. but u are forgetting this is an 'Idea' there are lot many potential coins.. just ready to take its place. And people like us are so used to with it, there will always be a virtual currency. Bitcoin is the current face.. later i can be anything..
It has just began my friend
although bitcoin can still be valuable when it gets lesser. I have to agree there are lots of altcoins that will replace once btc is proved to be really not going to work in the future. there are altcoins seem to have a sophisticated system and can adapt to changes.