I really get where you're coming from - but who's to say that you and your dad are any more important than someone in South Africa, Brazil, India who might not have enough vaccine.
If you were looking at ethics you'd have to look worldwide.
Sorry, I can't quote this for some reason but yes, I don't think I should be vaccinated before someone vulnerable in SA or Brazil. The point is that if all the vulnerable people are vaccinated should we look to taper the supply of vaccines. My DH has been done through his work and they had severe trouble finding people to take up the vaccines they were offering, in a bit of the health service that deals with very sick people. About a quarter of their doses a day were not being taken up by staff and they were having to bring in people like my DH who is part-time and really not a priority, so as not to waste a dose. I'm glad DH has been done but he's 43 and fit and well.