Yo, so I am going to drop some things here to state my opinion.
Being a programmer myself, having played with unity quite a bit, and always being held back by my own art based capacity(my hands can art, but my brains doesn't want to), and also being a man with a full time job, i know projects like these can take time and often times one needs to make time in order to work on your projects.
So it only makes sense that you want the project to make you some cash while you are working on it.
And its $5, I've seen devs charge way more for worse, atleast this game is playable with minor issues in 3 levels, thats already more than most can do.
Hotpink, don't let the nagging of people get to you, yes you takd long on updates, but atleast your trying.