No limits so far; my eldest is 5. My parents didn't limit my TV watching or computer use as a kid. It never did me any harm, although my kids, like me, seem not

No limits so far; my eldest is 5. My parents didn't limit my TV watching or computer use as a kid. It never did me any harm, although my kids, like me, seem not to get addicted to things and naturally shift between different activity types often (indeed, to my wife's annoyance, it is more difficult to get them - or me! - to pay attention to an entire movie without opportunities to multitask ;-)) But would I get strict if my kids did want to watch TV or an iPad for hours to the detriment of their health or wanting to do other stuff? Yes.