there simply will never be enough of them for this ever to become a true currency, or to be used in any major way for currency exchange.
This has been addressed a thousand times
I'm fairly new to all this, and haven't found those discussions. But I guarantee you, that people aren't going to be buying a house with their .000256 bitcoins even if they are valued at $10,000,000,000 each.
Not sure why they wouldn't, ppl already buy hotel rooms with bitcoin...hotel room = house for one night