It's up to you mate, you're free to waste your money.... Have you ever heard that one of the main thing before starting a training is to have a back up plan (except of course if daddy can help you) in case of anything like our massive downturn happens??????
2 good friends of mine just finished their training and are both in your situation... One went back to his dispatcher job and the other to his law firm (he used to negotiate contracts for airlines)... They find it hard but they keep an eye on any opportunity anywhere ...
But in the other hand, as you'll probably never pay back the amount you borrowed... Go ahead, enjoy!