I live at uni, so i have a computer in my room, which i use to watch DVD's or downloaded TV programmes (got to love BBCi player and 4OD!)
I got a TV at home in my room when i turned 12, me and my sister got them at the same time. Before that we used tapes to go to sleep. Our parents were worried that we would spend all our time i our room. You know how they countered that? Digital TV, only downstairs. So i have a choice of staying upstairs and watching a 5 channels which are ok, or going downstairs and watching sky + (like cable and TiVo mixed together) with hundreds of channels and a chance to watch 2 hours of Scrubs a day??
No brainer!