I am wondering if Bitcoin gradually ceases to be relevant
You'll stop wondering when Etherium bubble pops.
If the Ethereum price stays about 0.02 for the next 6 months, will people still think it is a bubble?
Let's wait 6 month then. I bought a few ETH just in case :-P But I also believe the bubble will pops soon or later.
I think now is a bad time to buy now. No altcoin has ever seen a rise like bitcoin.
Most (look at DASH) go up in a pump and then go back to their normal level.
ETH is not just an altcoin.
Most altcoins are different branches, originating from Bitcoin.
Ethereum is built from scratch and can run DAPPS.
I expect it to rise for a long period, with some small dumps now and then.
Ethereum marketcap is bigger than all altcoins combined together.
Why everyone keeps believing this is just a bubble? I guess people are blind and don't see the forest from the trees in front of them. It doesn't take a rocket scientist to see that Bitcoin is screwing up while Ethereum is inventing on the daily basis. People are just diversifying, nothing else.