Good for you for being so involved. More parents should be as vigilant. I don't think you're nuts at all; it is our job as parents to protect our kids. There are so many more bad/ negative influences out there now than even 10 years ago. Influences that are more pervasive & in some cases, what I'd even call "virulent." No, we can't protect them forever, nor should we, but greater value should be placed on limits & the things your family values needn't be unduly altered just b/c his friends' parents' values aren't yours. There are things kids don't need to be exposed to so early & skills they need to be learning that won't be taught at or by interacting through a computer terminal.
I'm totally with you on the phone thing too. Kids just don't need to be plugged in all the time. They need to have more opportunities given them to actually interact in an interpersonal manner, not via computers & phones. I think such technology is fantastic- when used with restraint. Kids still need to learn the finer points of interpersonal communication. Electronics just change things.
For the record, I absolutely refuse to allow Playstations, Game Cubes, and the like in our home, and it may be at least a cool day in Hades before I'll let my kids have TV's in their rooms. One in the playroom, just outside their bedroom is enough.
I know I'm SO old fashioned; hope my kids will be too.
An Electronics Fascist ;)
-D.