With people like you being the engine of Bitcoin, it's going nowehere. Yet another wonderful idea ruined by bunch of idiots.
with respect 99.9% of the worlds population uses fiat money without ever being involved in production, transport or verification of transactions of that money in fact most don't even think about all that - as long as it works. This restricts no-one from using fiat money.
Bitcoin mining is changing a *lot* over the next few months from dedicated Bitcoin only hardware to the halving of the block reward.
GPU will be
much less profitable - how many of your 99% will be purchasing single use dedicated hardware to Bitcoin mine on? If they do they should be looking t the AVALON ASIC, apparently that will be power cable and network cable and it will mine with minimal setup required.
Bitcoin "mining" and verification will continue fine - and no I am not trying to grab all the mining for myself - if there was only 1 miner on the planet Bitcoin is dead - the distributed trust model is gone and it is centralised (something it was designed not to be and something I am not interested in).
Please if you are going to discuss this keep it to reality "happens to Bitcoin if death squads come and just eliminate most of top miners" I am not sure what country you live in but that is very unlikely to happen in mine...
and really your "normal people " should not be beta testing any software let alone a digital cryptocurrency.
Bitcoin mining is open to anyone that wants to learn and try - not everyone is willing to learn or try, this is not the fault of the community or Bitcoin.
Abusing people for reponding does not strengthen your case
peace
Graet