wow
well, what else to say. Everyone has its experience and opinion I guess.
As someone above was saying, not every wannabee thinks about flying a A320 or B737 at the end of his training. That's being naive. I've been searching for jobs that would allow me to fly c206s, maybe Caravans at best, in all parts of the world. I never thought I would be starting on a King Air! If it doesn't work out, I have a plan B, and a plan C.
You won't get a job by just sending a CV, that's for sure. All my friends that have got a job went directly to the company's office talk to the recruiters, or got to know pilots by walking to them on the apron and start chatting with them.
Bottom line is, decision is up to you: follow your heart and start the training, hope for the best but be ready to accept all the possible negative consequences, or, listen to other people's opinions that advise you not to start the training and maybe regret it badly one day.
Personally, I'd prefer to regret for MY actions than for having followed other people's advices.
Good luck!