Why is it that sites ask you really random things when you want to deactivate your account?

Like 'How long have you been a member for?' "Please provide your four alternate passwords' 'Who told you about this site?' 'When is your mother's birthday?' 'What is your best friends middle name?' 'What is the square route of pi?' 'Are you wearing a purple shirt?' Well, you get the idea.

So whenever Bebo asked me 'Why do you want to deactivate your accout?' I said:

"My family and I are moving to Mars to live very, very far away from civilization, as no where on Earth was good enough. We are going to live under a rock in a huge hole in the ground surrounded by Martians and strange bat like demons, and there will be no internet connection. Also we are giving away all of our possesions except for one potato sack each to wear. Plus my dog ate my computer. Good day."

Not like they actually read it, but still. Ask a stupid question, get a stupid answer.

By the way, in case you were wondering I got Bebo years ago and never did anything with it and I only just got around to deleting it.

On another note, AGGHHH! I so failed R.E. No joke. And what makes it worse is that I could have gotten the same mark with barely any revision because I already knew all of the knowledge questions! Time is my new mortal enemy...Well, next to running... But thank God it's over, though. I can finally live again!