In reply to JuanTinco:
I went back to University at the age of 43 to do a Masters degree in something I was interested in. Financially, I was very fortunate in that I had sufficient money from the sale of a property, and a supportive partner who was working so there weren't too many financial sacrifices necessary.
I loved it - after too many years putting up with corporate bollocks, it was lovely to be doing something I was interested in. I was the oldest student on the course by far - many of the other students were recent graduates, and there was in interesting difference in the way we approached essay-writing and the like. I'm reasonably literate and have good research skills, so I found it all quite easy, which I think reflected 20-odd years of work, whereas many of the younger students found the step up from undergraduate studies to Masters-level studies quite challenging.
As it turned out, I wasn't able to get into a job using the MSc - having worked a certain way up the career ladder, I was reluctant to drop too far down and the kinds of jobs I was interested in were few and far between, and employers were more interested in younger cheaper candidates. That may not be the case with your choice of paramedic - I'd hope there's a good demand for paramedics.
Good luck if you decide to go ahead with it!