It's probably not a good idea, but I have never backed up my work. I really should one of these days. I have an external harddrive and multiple harddrives in my computer, so I don't really have much of an excuse. It's not like I haven't ever had a harddrive fail on me either, or experienced disaster such as my apartment flooding. Harddrive failure I can just get around because I have a device that can pull information off of dead harddrives, and the flood I got lucky and water didn't get into my tower (it fried my battery backup though).
I could make a joke that I like living on the edge, but if I were to lose all the work I have right now I'd def be upset for a few days. But, eh, I'd ultimately get over it because I improv most of my art anyway, and all the important information I really really need is on google drive. When I get back into making games I'll care more about backing up my work since it'd actually matter a whole lot more if I lost it. My comic thumbnails and references I can easily just redraw.