I have no particular intention of locking down my 15-year old (in 13 years) with serious parental controls. But not all children are 15. Letting a 4-year-old run around loose on the Internet with no protection sounds like a bad idea to me. Which do you prefer, simply telling a 6-year-old "No internet access for you!", or drawing some boundaries but letting them roam within them freely?
"Someday, your children will need to be able to live without Mommy and Daddy saving them from everything!" is not an argument for throwing your 5-year-old out on the street.
To cover what I said: 1) I have remained in control of my "virtual" life my entire life. 2) I have never made a mistake of telling someone I don't know anything important about me 3) I believe if I can do it, others can too.