smallfox I am not entirely unaware of the problems, as my 20 year old will be graduating next year, and we will either be funding his MA, or his rent when he starts working. I have told him to avoid London when he starts looking for work, as he will not be able to afford to buy there, and his chances of getting a job and getting on the housing ladder will be better elsewhere.
As for teaching jobs....it is subject specific as to what is around, and what openings there are. I taught outside my own subject which made me more employable, and if we hadn't moved abroad, then I would still be at the same school as teaching jobs in my subject in Cornwall are like hen's teeth. I suspect people get a job there and then stay until they retire, as happens elsewhere. One of ds's teachers in Brussels had been at the school 25 years.
As to what is doable...well, that depends on what the individual is prepared to do to make it happen. ' its about wanting to live where your life is and not being able to afford it, or the economic opportunities are just not there.', in which case, you work out what you have to do to get the economic opportunities, or to afford the lifestyle you want on the budget you have (or not). Just because your life happens to be in one place at one particular time, doesn't mean it will be there forever, or even should be. However, as a Forces child, moving was the norm for my family, so you got on with it wherever you were living, and travelled to see family.