This is one of the bigger problems when it comes to crypto. People relying on desktop and software wallets. Storing them in their computers and eventually losing access to them either due to hardware or software failures. 

Sensitive and financial information shouldn't be stored on computers. We have hardware and paper wallets for long term storage. If for some reason you do end up doing it at least password protect the sensitive files. Hide it from plain sight and don't make it easy for a hacker to find it by calling it All my BTC private keys.txt