Chemical stain
I have a love/hate relationship with the darkroom. I spent a HECK of a lot of time in the darkroom when I was a photo assistant, burning and dodging and spotting and bleaching, and there's a certain feeling of craftsmanship (craftwomanship?) that comes with creating a photo by hand, something that's lacking in the point and click world of Photoshop and inkjets.
But I don't miss the hours and hours of time required to kick out custom prints from the same negative. I don't miss inhaling more chemicals than Keith Richards, and I don't miss the monk-like seclusion of the darkroom, either. Give me a nice workspace and a 24" monitor any day.