You are kind of wrong here...

Ok, bitcoin has failed the initial proposal to be a decentralized mean of day to day transaction system, but it haven't failed in itself.

It evolved. We probably won't be using it to pay our grocery. There will be other projects, like dash you mentioned, that will fulfill this role.

But when we talk about large amount of money movement, with low cost and a already proven network safety, Bitcoin is the way to go.

Also, it is a gateway to other currencies.