Fine as long as you're able to keep earning said salary. It's the state you end up in when you're not for whatever reason that's arguably the big difference. My own partner's a nurse and has gone through extensive periods where her income has been low or non-existent and while it wasn't really an issue given the presence of my salary to fall back on it's not hard to see how difficult things might become esp. if there were no/limited government subsidized healthcare and high levels of student debt (again, thankfully not such a problem in Australia - even as a foreign student, as she was, there are measures in place to ensure they don't saddle themselves with unreasonable debt. Citizens can often pay off higher education fees within a few years of graduating, and no repayments are required in years your salary is below a certain threshold)