Can you please provide an argument for why choice ought to be the principal factor for some attribute to be taxable? The justification is in no way clear to me.
Hmm. No one chooses their parents. Should rich kids be taxed like poor kids?
> Would you agree that taxes should be just?
I'll agree that "just" has no agreed-on definition and is used as a way to imply that the other person is bad. As such, I find it a useful signalling device in a discussion.
Are you certain that you don't want to argue that "just", the word on which your argument and position depends, actually has a useful and good meaning?
Because of that I think that the comparison of using height as a deciding factor in taxation is like comparing apples and oranges.