I believe that within a year BTC will get in trouble due to centralization of future ASICs. Even now and more so month after month people cannot buy ASIC individually. The scenario which seems the only possible going forward is this:

* all future ASICs will be deployed by large companies working on a thin margin
* some of the old ASICs will continue to operate until the profit runs off and only very few will operate after this point on free electricity
* it is much cheaper to look after large amounts of hardware in a dedicated setup, hence data-centers will be the place to run ASICs, thus concentration of processing power in several places
* ASIC companies will become regulated as a special sort of business crucial to the economy
* end of freedom

that's why we need to hold into scrypt alts (or something similar, really p2p) and be ready to pick up the fallen flag of freedom