Why do people go in ETH now or trust ETH now when the secret to success was to buy ETH at $0.25 or $10?
When now you are better off going in projects that are like early eth for example koinos which the devs work relentlessy on daily as you can see on github but its still so cheap as eth was day1 so this is a chance to make $100k from $100 while eth is not only making the rich richer
I think, there should be no classical thinking in this way. ETH has a known value for the adoption, and widest adoption of altcoins, and sometimes you don't realize that ETH means so much to the altcoin market, that widespread compatibility is create greater value for adoption/investment. Those comparisons will be lame even with your dyor, koinos - you have faith, keep them for a few years, let time prove its acceptance/applicability and make you worthy.

If adoption just your point to justify the ETH then there is a lot of blockchain out that has much better feature than yet ETH still on the top. What do you think is the reason for that? Adoption, feature? Of course not its there reputation as first smart contract blockchain is the only thing keeps ETH alive despite the slow speed and high transaction fee which other blockchain already solved while Ethereum is 3 years behind in terms of tech.