What is a Mac mini actually for? [Test copy 31-39580]

Saw the Mac mini online and I got confused. It comes with no screen and no keyboard? So you just buy the box and that is it? Who is it actually for. Is it for normal people or is it more for people doing editing and stuff like that. And is it worth it or should I just get a laptop. Sorry if this is a dumb question, I only ever used laptops before.