It makes sense to hold ether in current market conditions because:

1) ETH recently gave return of almost 100% in 1 month gap (April- May 2018). An important thing to note here is that most of the alt coins were in red during this peeriod. This should be sufficient to tell you how strong ether is.


2) Currently most of the online payments with crypto are being made either with BTC or ETH. If BTC performs bad, all the share will go to ETH. This means with the downfall of BTC, ETH will be benefited the most.