I think there is hope for other altcoins if precious assets like Bitcoin and Ethereum enter an uptrend. For example, $1000 became the bottom price for Ethereum. It's now up to around $1700. So, we may be in a good period for altcoins. For this reason, I think it might be good to buy altcoins gradually.
Almost success earn profit with ETH if not loss on other coins because I have planning when ETH still drop under $1000 last month but I don't have saving fund after stuck and loss on other coin, maybe we can reach above 70% profit with ETH success back to higher price right now above $1,700 and looks fantastic recovery with ETH drop last months. I think than other altcoin looks promising with ETH and have faster way for recovering and back to the top price again. But depending with trader and investor which one based on them are the best altcoin for investing, keep with eth or not.