Onus
Titan
It doesn't matter how unstable the computers are, they're just doing the math. Bitcoin is not a practical, exclusive, full time option, for a number of reasons (e.g. preventing double-spending of coins means that every transaction requires confirmation time from the network). As a long-term store of value, however, bitcoins could do quite well. They cannot be counterfeited, and they cannot be arbitrarily printed by the parasites of some central authority.