But even as a child, I did not understand why there are no locks on the doors to our rooms at home ... and why you can enter my room without knocking.

Now I understand that such a picture was observed in most families, where there was no such thing as personal space in principle. Maybe this is due to the "tradition" of communal apartments, where everyone is used to living on each other's heads ... and there was no question of any personal space ...

But personal space is not only the territory of a room / house, it is your comfort zone in public places.

When in the institution where you are resting, someone laughs and shouts too loudly ...

When a stranger is discussing something with you, comes or sits too close ...

When late in the evening or at night they shine distant ones in the opposite lane ...

When you are thoughtful / busy, and a person ignores it all and climbs with his stream of thoughts / ideas into your comfort zone ...

I really appreciate my space, and I don't like being invaded.

Is personal space important to you? How often do you invade someone else's?