Does liquor go bad after a few years?

I know that wine is best kept at a certain temperature and rotated, however I can’t find a site that mentions if hard liquors have to be kept a certain way as well and how long of a shelf life do they have.
We keep liquor for the occassional guest but most of our friends don’t drink, and we only drink on special occassions. I need to know if its time to throw some of them out. If there are any bartenders in fluther, can you please let me know what type of drinks go bad? Thanks. :)