It's good subject matter for a song. John Prine's mighty Hello In There covers similar ground, in his case, examining what it must be like to be an old person whom everyone just walks by. So yes, well worth pursuing.
The things that jump out at me in the lyrics so far:
I'm not sure of the significance of the stars in the first verse. And the word "ignite" feels wrong - the stars are already burning, so there's no ignition taking place. In the given context I'm sure you could use something such as the stars being the narrator's only light (in the darkness of night).
In the chorus, the words suggests the narrator is speaking aloud but people are ignoring him - it makes me think of an old drunk, or maybe someone with Aspergers (if that's the right condition) shouting on the street - probably not the image you're after! Also using the words "here" and "hear" in adjacent lines doesn't feel strong to me. Back to the story - I guess, I'm saying maybe instead of him saying "I know you hear me", why not go back to the visual and say "I know you see me"? Also, the idea of the narrator demanding people make a choice feels a little strong, too. It's as if the narrator is angry - "It's your choice!" That maybe exactly what you're after, but I get the sense that the song could be more of a plea - in which case the word/idea maybe softened a little (but this could simply be because I've John Prine's song in my head now).
The next two verses are spot on - this is setting up the story nicely, and all works well.
So, the way I see it, you can now develop more of that back story and tell us how the narrator came to be where he is, what losses he endured, sacrifices he made, mistakes, etc. Or / And move to a more "this is how it is to be alone and on the streets" type section, where the song becomes a plea for help / a warning / an observation on how we ignore each other. You could have a verse in there about him trying to start conversations but having no voice / nothing to say - how can you have anything to say when no-one ever speaks to you, type thing. You could pull in examples of how he watches a man talk to his dog, and "yet he won't even talk to me." Or people staring at their phones and avoiding eye contact with him (whether deliberate or not - probably not in this day and age. They probably don't even notice him because another Text has just come through). Loads of places to go!
Definitely a good idea and a fine song to be had there!
Cheers
Derek
