I would kill myself if that happens to me, haha, just a joke, but no one can really be happy if he/she lost more than a one million dollars! I mean, i would not even know how i could react.
That is why the hardware wallets have ever existed, and i remember that i started mining on 2013 and i did not even stored my bitcoins on my pc, everything was on my paper wallet and i switched to hardware lately on 2015.
That is why it is better if we will split up our holdings into different wallet or you should store it in cold wallet like ledger or most secure cold wallet.