'As a PP says most caring and service professions are out, presumably you want to avoid someone who gives back to society.'
Aww that's a bit harsh. 55k would include a lot of doctors etc, senior medical professionals, whatever, all sorts of people. Lots of people on a good salary deliberately give back to society in some way.
'Being materialistic is a must, what are the other reasons that them being wealthy matters so much?''
Being ambitious, hard working, relatively emotionally 'together,' with a mind able to problem solve etc, able to take on responsibility.
I'm not saying people on lower salaries can't do that of course, but having achievements might be a sign of it, rather than just chancing that someone has these qualities.
Someone that successful would be unlikely to go out with me long term lol as I'm disabled and can't work, but I can definitely see the appeal and it's not just money.