Our neighbors keep their sideporch light on all night. I've always thought it was a good idea in lots of ways -- keeping the house lit is welcoming, and probably safe. I've wondered if it was symbolic...they had a daughter who died and my imagination dreamed up that it was kept on as a reminder that all the children weren't home.
The only small problem is I like to sleep in pitch black dark. And the light shines right in our bedroom. I was so happy when we got shutters instead of blinds because they blocked the light so much better.
But now they've moved. It's been a several year process of maybe they'll get to move back, maybe not. But last week it was for sure not. And they moved their final belongings. And for the first time in 8 years, that light has been off for several nights in a row. I miss it. I miss them.