I have lost a few save-games, so I can relate. In my case it was because I forgot about them or the fact that, I did care if they were lost (I rarely game at all).<p>I have an "offline" Windows 7 gaming PC (only connected to a dedicated file-server, that holds the game installers, drivers, etc). I only use this PC to play Witcher 3, Fallout 3/NV, and a few others. I found this PC (i5-2500K) at the side of the curb, and invested ~$21 in 16GB of RAM, and ~$230 in a GTX 1660 Ti (6GB). It runs my games at Ultra settings in 1080p, so I am pretty happy with it.<p>It has happened that I have lost save-games because I did a reinstall and forgot some save-games because "There is nothing important on this PC!" ...doh...
I then switched to using Duplicati for backing up save games, screenshots and game configs to the dedicated file-server.<p>I don't bother with that anymore though, because the gaming PC now runs off a FibreChannel SAN backed by ZFS Volumes. So I have snapshot, rollback and clones. Which is also quite useful for testing drivers, and rolling back to "a clean install" or "a clean install + windows updates via WSUS-offline" without waiting for the installer or updates.