I've always wanted to be in the mil, does that mean I deserve to join? Of course not. As others have said, the tests are designed to pick the best person not the person who wants it the most.
I was a cadet as a teenager for 4 years, I only know one person from my squadron that joined the RAF. He didn't even join the full timers, it was the Regiment Aux that he joined.
I wish you the best of luck, do a bit of research decide it's for you (or not) and go for it!
As many have said on this forum, the armed forces isn't a job, it's a lifestyle.