The fear that you will have to go on retrying the captcha text-entry forever because it is just so damn hard to read those things
Dude1: Dude, WTF, this is the 9th time i'm entering the captcha, either this thing is playing mind games with me or i am dyslexic, one more "Oops" and a red message and i am throwing this PC out the window....grrrrrrrrr
Dude2: oh oh
WHAM!!! Crash!!!!
Dude2: control the rage buddy, you just have captchaphobia