Most of the ethereum devs I know were bitcoin people first. Bitcoin is cool but you simply can’t do what you can do on ethereum. Remember Vitalik himself worked for bitcoin magazine and pushed hard for updates that would make his ideas possible on bitcoin, but they were repeatedly rejected. So we had to build ethereum instead. Now with ethereums success we are seeing people go back and say “bitcoin does this too” but it simply doesn’t. And a side chain, that isn’t inheriting security from layer one isn’t good enough.

There is a lot more bitcoin wrapped onto ethereum that there is on lightning. (Now 1% of total supply). Ethereum is eating bitcoin.