Film is forever.
Personally, I could do without them. Some people went underground, others went above to live life like our prehistoric ancestors. Kurt is the leader of a gang of marauders, and they accidentally stumble upon a deserted town that has a mysteriously well-stocked supply of food, fresh water, and vegetation. This, of course, leads to much dancing, celebrating, and general rejoicing. The funniest thing about RATS though, is the post-apoc setting.