Crazy Vayager, you are so right. At a certain point, I realised I don't want this. I can't say I could do it and I chosed not to, but although the test did't seem impossible to pass, I just had the feeling I'm not the right person for the job.
As to the type of people I met, well, this is my very subjective perception, which also might indicate I just had a terrible misunderstanding with myself when I decided to apply in ATCO jobs.
Good luck to all those who are made for this job! Good luck to those who are made for other jobs!