The slowly expanding list of who can get the vaccine is based on what it will take to have the most orderly and effective rollout, but I don't think you need to treat it as some kind of moral imperative. If you can get the vaccine, you should get it. Even if you're slightly skirting the rules that are in place, there's a good case to be made for taking the shot.
The vaccine is a preventative measure -- it's not a cure for anyone already sick. It's not the same as taking an organ from someone that needs it, or stealing someone's chemotherapy drugs. The theoretical person who doesn't get the dose you had could go on with their normal life and never get COVID. If you refuse to get vaccinated and then get infected and infect someone else, is their life on the line because of you? There's really no right answer.
I have a young co-worker that was able to get vaccinated early-on because the place giving out the shots wasn't really paying much attention to the rules -- I don't hold it against her. She has a public-facing job that she goes to everyday and the potential for her to spread it to others is pretty high. If anything, you ought to at consider how likely you are to spread infection more than the fate of the one person who misses out because you got yours early. If you largely work from home and only make short trips for groceries and essentials then you can probably wait. If you have to go out a lot and work in close quarters with co-workers, then maybe it's time to get stabbed. If you only want it so you can return to dining out and going to nightclubs or sporting events, then suck it up and be more patient.