So bachelor pads are usually either you and your lonesome or with a couple of friends who all know when to leave a sock on the door and tend to live your lives with various alcohol and maybe a jug of milk in your fridge, and the only time the cabinets are well stocked is when it's party time. Which also happens to be the only time the living room's clean.
Dens of Iniquity are you and your lonesome and the spare room has all kinds of interesting things going on and may or may not also serve as an office for illegitimate business practices or porn watching. There's usually some kind of recreational drug involved and oddly the cabinets and fridge are better stocked. Bachelor pads have condoms and lube in a drawer but Dens of Iniquity have lube in a dispenser on the head board and the condoms are probably a selection under a pillow somewhere.