As an alternative to money yes, as the only currency, don't think so. I even think that Steemit has more chances than Bitcoin.
Bitcoins main problem is that it's not centrally controlled. Currently each transaction on the blockchain uses kWh, equivalent to, on average, 2-3 days of electricity in a UK house.
It's not scalable and it's grossly inefficient because of it.
You don't understand. Not being centralised is the whole point. As for energy waste, do you realise how many computers and buildings full of people are working right now to process that sandwich transaction you made at lunchtime?