I think Ethereum has a lot of upside movement. I would take profits at a much higher price point. It will come down when it hits peak. The tricky part is to try and sell at the top so you can ride it down and get more at the bottom.
https://bitcoinist.com/economist-ethereum-to-repeat-bitcoin-rally-to-20k-according-to-metcalfes-law/
https://bitcoinist.com/bitcoin-fractal-suggests-ethereum-will-soon-see-large-leg-higher/
Metcalfe's law
Metcalfe's law states that the effect of a telecommunications network is proportional to the square of the number of connected users of the system. First formulated in this form by George Gilder in 1993, and attributed to Robert Metcalfe in regard to Ethernet, Metcalfe's law was originally presented, c. 1980, not in terms of users, but rather of "compatible communicating devices". Only later with the globalization of the Internet did this law carry over to users and networks as its original intent was to describe Ethernet purchases and connections.
It's very easy to get caught in hype.
Eth is at the end of the day essentially a free platform. "Metcalf's law does not necessarily give something that is essentially free, anything of tradable economic value).
In my view its simple. Bitcoin which is truly limited in supply, and has been adopted globally as a store of value. Various apps that build on the Bitcoin base layer will come and go, and will be pumped and dumped. But even for those that actually have utility, their lack of scarcity and infinite market demand to efficiency, mean that their functionality will over time essentially be free. Good recent examples are ChainLink and Uniswap.
BTC will always be digital gold. And just like gold, all sorts of businesses were built on top of gold (be it jeweler's, pawn brokers, physical storage solutions, online trading platforms, etc), End of the day, non of the business built on top of gold were limited in supply and hence over time become incredibly competitive.
That is not to say though, that in the short term they cannot have speculative value. If you can time it right, or get in early, once can make money. But I would never hold any alt long term.