First MtGox disapears with an BTC fortune and then Neo Bee. Besides them, there are countless mining companies that never refund their clients on empty promises. Sadly, in generall there is to much scamming going on in the BTC to get this mainstream! Noone want to get ripped off. Especially on his/her first encounter with BTC. And sadly, right now, too many people encounter a scam as their first encounter with BTC.
and in the wild west, there were bank robberies everyday, there were railroad and stage coach hold-ups at gun point demanding peoples gold.
then this century there is the government stealing wealth buying mansions on their high pay, then telling everyone that the 'people' are in debt, and its all the fault of the unemployed (who get less then minimum wage)
then theirs HSBC doing criminal acts, Cyprus banks taking peoples wealth. mastercard banning customers.
there are 171,000 tonnes of gold in the world. do you know how much gold was stolen by bandits in the wild west, by hitlers army during WW2, by banks and governments more recently
gold has more of a "theft" taint percentage (based on numbers currently mined) then the bitcoin % stolen