I had this discussion were my partners (slightly different case, but not much) argued that I live cheaply (easily on a 1/3rd of what they need) and because of t

I had this discussion were my partners (slightly different case, but not much) argued that I live cheaply (easily on a 1/3rd of what they need) and because of that I should get 1/3rd of what they get. I find that utter bullshit; my wife and I made decisions in our life which allows us to not need much money in order to never have money stress. The fact that they did not is not relevant imho. And yet this personal circumstances stuff reappears a lot; lot of managers seem to think it's a valid reason to raise one person instead of all similar jobs.