Huge Dilema

So today on a whim, I visited a local hospitals job site and they have an opening in my prior field. It pays really well, it would be stable, it would erase my money woes and give me back the lifestyle I was accustomed to. BUT, I didn't thoroughly enjoy the work or the politics of that type of work environment. I know people who work in that lab and are very negative about the place. I've interviewed there twice before and didn't get an offer. This place is way more strict than the clinical lab I worked in and research lab I worked in.

My situation sucks right now being on unemployment, but I love having my coffee shop job and the possibility of training for a new field. Do I sell out and try to return to the job I wasn't happy in just so I can have a good paying job again or do I take the hard road for the possibility of future gain/happiness? Or do I try to do it all?

I made it very clear when I left my past job that I had no intention of sticking with that field because of aforementioned lack of happiness and passion for it. BUT i miss the $$$ and stability. I also feel like I'm kind of a joke having applied twice and been declared "not a match". Also, my lack of passion for that job really became apparent once I left that field.

I just don't know what to do.