Don't you think price blast not correlate with its real life usage since its inception?
Its hoarded for speculative purpose but how many major cities in the world have even its ATM?
I mean we all the time correlate its value with fiat currency then buy/take then what's its purpose in my day to day life?
Who will accept it in store when confirmation time is so long.
There are ways to "bet" if a transaction is going to be legitimate before confirmations start rolling in. You can check the address and unfold it's backwards history to see if there are older double-spendings thus I don't see a real issue here.
Also don't forget about what's going to happen in the near future, secondary chains won't need confirmations thus solving the issue for online/offline "speed requiring" shops like cafe's, bars etc.