Teenagers spend lots of time alone in their room.
Introverts spend lots of time alone in their room.
When you have teenagers who also happen to be introverts, you absorb every spare drop of time that they are willing to spend outside of their room in the presence of others as though it were the most exquisite wine.
And, assuming there are only a finite number of minutes that they are willing to spend around other people, engaging in fun and entertaining activities, letting them go spend summer nights with friends at street fairs and cool bodies of water means that it might be days before you get any of that wine for yourself.
It would be altogether unfair of me to not let them go hang out with friends.