I think someone into nihilism should be happy, but they're always quite depressed. If nothing really has value then should you just be doing stuff you enjoy? What I mean is, nothing has any value or significance right? So why not just ride a bike, or read or have sex all day? They may not have any value, but wouldn't they still make you feel good? It seems almost contradictory to me for nihilists to believe nothing has value, but be really upset by that.
Here is another link for you, but it's just for humor.
http://www.strindbergandhelium.com/