I have a two year old and four year old, both boys. Although I keep my main system locked in my office (tube amps that sit on the floor and turntable) I've always taught my kids how to "use" electronics. They know exactly which buttons to press on the TV & VCR, how to hold a CD/DVD, how to insert it and take it out, etc. Of course, there were a few "accidents" along the way but, even as young as they are now, there's no problems. Even when I'm in my office on "Dad System" my four year old helps me change tubes, turn on the amps, hands me my stylus cleaner, helps me put the clamp on the record, dry brush it off, etc. When he helps me turn on the amps, it looks like he's trying to diffuse a bomb he's so nervous: I've drilled it into his head they are HOT and DANGEROUS! He won't even go near my turntable. I think it's all about training and respect. (No beatings required.)