Last week everyone in our area got a direct marketing message from a hotel chain, in the shape of a 'do not disturb' cards you find on hotel doors. This marketing tool was hung on everyone's door knob and when my significant other found it leaving the house, he took it with him to immediately throw it in the trash. All the other door knobs were still carrying the 'do not disturb' sign.
When he came back home from grocery shopping, he found another one on our door. One of the other door knobs was now message free. Basically, the only explanation was, that the person who lived behind that door, took it and hung it on our bare door. Why they did this, is obviously not clear to me, but I take it, this person was too lazy to bring it down stairs and throw it in the trash, but was not to lazy to walk over to our door and hang it there.
Now obviously this is not a big issue or deal, but I do feel that this illustrates quite well how we are all living our own lives, not caring too much about the one's of others.