From various sources, MyEtherWallet (MEW) are not under development and maintenance any more. Even its founders has confirmed that they are switching to develop a new platform called mycrypto and encourage everybody to move there property to there.
But IMO, MEW or mycrypto is just a gateway to access your real wallet in the blockchain, so, both of them are still fine event MEW is not maintained anymore, right?
Indeed, from the beginning I knew the world of crypto currency I used MEW and I think this wallet is the best, or maybe I am lacking experience,
But indeed, from the beginning I used MEW there was no interference, thank you.