Jonesyboy.
While I agree with:
Don't be bitter about it mate, the rules are there for your safety and everyone elses. My reviewing board officer said that they aren't out to shatter hopes and dreams, they are there to filter out those with the right stuff and those without, and they would be irresponsible to pass people through who might later put themselves, their colleagues or those on the ground in danger - wise words.
And while standards have to be adhered too, I will also commend you on your choice of wanted career, and will say that IMHO you should only carry on trying only if: YOU know deep inside your heart that YOU will NEVER let YOUR MATES down because of any condition you have. If you are sure of this, then give everything you have into your efforts!