Sometimes I think..
If now we have a fast network with ecology as prosperous as ETH and low tax
Why we need L2 network and ETH..It seems like a deficient network repairing itself constantly.
And POS is without justice that the strong will always be stronger.Blockchain need justice and every one is equal.
I want to see you mates' opinion.And if possibile,please recommend me the best cryptocurrency undervalued now thx.

From my own understanding, layer-2 networks are friends of Ethereum.
Let's admit, stability is the issue that we have on Ethereum, high transaction fees and not friendly for small fund users.
Here come Layer-2 networks, which solve the stability problem of Ethereum but on a separate network.
I am also curious what if later on or in the future, Ethereum will manage to solve the stability issue of it, do we still need layer-2 networks?