Yes, and PC word processors would never replace typewriters, and email would never replace letters, digital cameras would never make film obsolete, online video would never kill off high-street video rental. Yes, very good that we have all those long-standing things still with us...
Problem is you are expecting a clever electronic etch a sketch to replace word processors. That just isnt going to happen either. Bitcoin is a lot of things, but an viable general alternative to fiat currency, it aint. Ripple otoh, way too early to say, but at least its not unthinkable.