Isn't it best to keep things concise, though? If something could be said in, say, six words, it wouldn't really be necessary to use, say, ten words to say it. In fact, all that extra stuff would just get in the way of what you're trying to say. And honestly, I don't think it's that short for a song at all.
That said, I like the kinda raw feel these lyrics have to them, it'd make a good darkwave kinda song. -nods- GJ!