If you'd like to improve, definitely! There are all sorts of things involved in singing that some do naturally and others (like myself) do not. Having a knowledgeable teacher who's able to observe you, identify areas of improvement, and help you progress is really beneficial. There's a whole lot of "not knowing what you don't know" at play.

Plus singing is a pretty personal way of making music, and there can be a lot of social fear of doing it badly. Formally studying it can help with getting over the psychological hump from self-identifying as "someone who is attempting to sing" to "singer".