It's for your own protection. There are pedophiles who will try to make dates with young girls...old men pretending to be 15. There are a lot of predators out there, let's just put it that way. It has nothing to do with you and everything to do with the sickos in our society.
It's not at all wrong as long as you are trustworthy. If you can be trusted to not spend too many hours glued to the screen when you should be outside getting some fresh air or doing chores, etc., and if you can be trusted to not look at inappropriate websites or talk to inappropriate people, then it's perfectly fine!