Well if you were from Australia and I can't tell where you are from then I would offer you the following advice:
Google all the job opportunities across the country. It is clearly not working where you are. Your husband is miserable, your miserable and instead of continuing on this vicious cycle.....make things happen. Be determined to make a change. Start looking into anything and everything that may have reasonable merits for moving. Make job applications for both of you in the same country regions. Broaden your horizons, think outside the square.
You don't need to stay caught in the city with the city lifestyle if you are determined to make a change. Only you can decide to make that change and get the hell out of where you are and you are never going to go anywhere except backwards and lose your marriage to boot.
If you want your marriage and the man that you loved once more, then get cracking girl, pull your finger out, look at all opportunities, think outside the square, see what the broader possibilities are.
You are only limited by your own design. People have many many worse things in life to content with other than your current set of circumstances that are far worse. I work in the medical industry and I can tell you......unless you have contracted a life threatening disease and had your whole existence and very life as you know it threatened or taken away....you have no problems you can't overcome. Get on the internet, start searching and get your husband to STOP FEELING SORRY for himself. Peoplel suffer depression every day for far greater reasons. Tell him to get over it and start making changes for the better and stop wallowing in self pity for his situation. He can change it.
You need to stop thinking you are MRS FIX IT as well. You are not doing him any favours by allowing him to continue down this path. Tell him to smarten up, stop being an idiot and make changes in his life.
You guys are not going to have a marriage if you don't stop this idiodic behaviour and realise that your life is pretty good. You are making it miserable by not taking your life into your own hands and making some better choices. No-one is stuck where they are unless they choose to be.
I hope this all works out for you both and it will if you let go of your problems and find solutions.
GOOD LUCK TO YOU BOTH.