I have the same problem. Worse is that I kinda need to leave my computer to do the backup for upwards of a few hours, making it slightly more inconvenient. I know I haven't done a backup since my last major update to my commercial game, so if I lost my data right now, the source code would be gone (the compiled program itself is backed up in a secure location).
Suggestion: if you haven't by the time you read this, do a backup of that source code right now. Leave backing up the rest of your computer for another day if necessary.
This is the public group instrumental rationality diary for July 16-31.
Thanks to cata for starting the Group Rationality Diary posts, and to commenters for participating!
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