Know of anyone who gave up because of the exams? No. And never heard of such a person, some who have struggled but none gave up.
We are a classic 'self-selecting' population. Because we 'want' to fly, we are motivated and will put up with an amazing amount of aggravation to do that. Which has a lot to do with why flying clubs are so rubbish at any sort of customer care and why we are prepared to put up with the 'word game' approach to the exams.
It's just a bit of a shame that when people have overcome all these hurdles and got a PPL they usually find the continuing aggravation more than they want to put up with.........