Why, what do 'they' say it is? Whatever it is, it's not enough in itself to be the only reason for entering a career like ATC. Especially if you won't be happy in somwhere like Aberdeen, Swanwick or Cardiff. Like I said before, even if you beat the odds and get streamed for aerodrome, a posting to Manchester is very unlikely. If your ambition to be an ATCO isn't strong enough for you to get past that, then you are taking the wrong career path.