I hate it when artists go and delete their images from their galleries or worse, nuke their galleries entirely. I'm thankful that there are people like you who rescue art.
I agree, I also hate it when an artist nuke their own galleries... but I understand why some of them do.
1. Some sites have a limited upload limit, so in order to upload more they need to either start paying for the hosting of their images or they can simply just delete some of their old images.
2. Sometimes, especially if an artist feel that they have improved at drawing, an artist will look back at their old work and think "The hell did I draw back then? I don't want people to see this! I better delete it!".