I'm right at 18 so I figured I can still count? lol The video game systems that we have (that are family owned meaning I didn't buy) are connected to our TV in our living room. My video game systems were (till I moved out) located in my room on my TV. My brother had a system in his room because we only get cable on one TV so the games in our rooms were for when it was occupied.
I have a laptop I used around the house, my brother has a computer in his room and my mom has hers.
When I was growing up my mom was fairly leinent on monitoring us kids. Firstly she always had an open question/asking policy so if we found something about sex, drugs, alchohol that we wanted to know more about she let us ask away. My family encouraged us kids to do research and be educated when we wanted to know about things, to think for ourselves and make our own decisions/opinions. (With some limitations, they're weren't about to let us go watch porn or anything!) When internet became really exposed and prevalent she occasionally checked the history and if the gaming got out of hand threw us outside or told us to calm it down. We weren't monitored 24/7 but checked in on to make sure that we were keeping our toes in line and making sure that we weren't getting into anything we shouldn't be or talking to people who we shouldn't. Usually though we were outside, working, or when online looking up stuff on the white house, government or playing video games. We hardly ever talked to anyone online and spent time researching or gaming. haha In fact the only time I remember constantly using technology was during an ice storm (like before and after), that winter which snowed us in, and when it was too rainy to work outside.
I don't think your wrong for watching out for your kid. It's good to know that parents care about their childs safety and monitor that. Really the only problem I have is when parents do the 24/7 monitor like a prison. And I only have an issue with that because in my experience kids who were raised in that grew up into hard drugs, pregnancy and an overall bad ethic, or they were crazy and couldn't do so much as order a burger from a restaurant without asking their parents at 18 years old but that might just have been extenuating circumstances. But that's just me! It sounds to me that you're not one of those parents! ;)