Interesting you say how you doubt it will ever disappear when I compare them to the HDDVD vs BluRay wars. HD was actually released prior to BluRay yet now the war is over and the younger of the platforms prevailed.
I see #bitcoin as HDDVD and #ethereum as BluRay. Could go either way.
Another way to look at it is #btc is #gold and #eth is #silver (coins/ounce) - Gold is too expensive is more like something to just look at with awe whereas silver although up there in price has many uses for it therefore making it more valuable in the real world.