When digital painting there seem to be fewer "stop-points" in the process than when processing a photo, so I'm less likely to remember to manually save (even though I know that's certainly the best way to do things, no matter what you're doing).
I've been using Photo to teach myself digital painting. Only problem is, with this latest release (1.7) the program is randomly crashing and when I re-open it there's no autosave file offered to load. In previous editions this wasn't an issue for me, so I'm hoping it'll get ironed out as a bug in short order. When digital painting there seem to be fewer "stop-points" in the process than when processing a photo, so I'm less likely to remember to manually save (even though I know that's certainly the best way to do things, no matter what you're doing). I've lost some good work that way. But I'm forging ahead, rather than jumping ship, because I trust the good folks at Serif to get this problem licked before too long--and perhaps I just needed a reminder to insert a habit of manual saving into my painting workflow.