Paddy Barnes lost his first 15 fights, and he didnt quit. Now he has two olympic bronze medals to show for it.
Don't quit dude.! I mean you're not gonna be getting worse! Who knows maybe one day you decide competing is not for you. But you don't have to stop training. Like my trainer says, fighting has an age, but trainig doesnt have an age. So if you like training and being in shape you can just always do that too. And if you don't like training, that might be why you're losing maybe? Just somethin to think about. Good luck!
You shouldn't quit you should always give yourself a set number of years, I.e give up at 25 if your still no good, but your not going to get any worse you should be able to turn the form around soon.