Which multi cryptocurrency wallet is safe for long term holding that either stores private keys locally or gives users exclusive access to their private keys?
I am currently holding around 80 different cryptocurrencies in small amounts. I want to hold these coins for long term. Need a safe wallet where I will be able to store all my coins. As I have heard that servers where users' private keys are kept by wallets can be hacked, I want to hold my coins in a wallet which stores private keys locally or gives exclusive access of private key to the user (the one which doesn't store private key anywhere). I am not willing to spend money on hardware wallets. I am planning to store these coins on a desktop or a mobile wallet (or a wallet like metamask & myetherwallet). Planning to buy a new desktop or mobile which I will use only for the purpose of storing cryptos & will keep the device disconnected from internet until I want to sell my coins.
there is no need to spend money on phone or separate desktop just use myetherwallet for this purpose.. store the keystroke file ans private key in a pen drive plus print out the private key in the hard copy and keep it in your locker
Thanks for answering my question

Just wanted to know that isn't it unsafe to access MEW using the computer which we use daily & is connected to internet round the clock? Kindly guide me.