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".
Voice lessons at the local community school of music. I'm a lifelong musician, but was an almost entirely solitary one. I taught myself different instruments, but I never felt like I could get to basic competency teaching myself to sing. I decided to spend ~$200 for a semester of weekly 30 minute lessons. (The community school cooperates with the local university to offer lessons taught by university students for a low rate.)
My singing improved (more work is needed), but the life-changing thing was getting involved with the local music community. It turns out they have a shortage of piano teachers--I had mistakenly assumed there would be plenty in my town! So I started teaching piano, which had long been a dream of mine. The school also connected me to local performance opportunities that are now a part of my regular music routine. And ultimately, the experience encouraged me to enroll as a (part-time) music student at the university, which itself has been extremely enriching and a tremendously positive community experience.
Wacom also sells drawing tablets with integrated displays [1]. I've never used them or an Apple Pencil, so I don't know how they compare, but Wacom isn't totally caught out here.
On the other hand, I can see a lot of people buying (or already owning) iPad Pros and using this feature who might not buy a dedicated device for it.
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".