What is your trigger?

Title. For me, my triggers are seeing different and far places from the world, imagining how vast the earth is and how so much is happening currently, especially that theres 8 billion people all from different timezones and such. This is basically my thought train when seeing nostalgic pictures, photography of lonely places, street photography even. Also, lonely/abandoned buildings or brutalism.

Music aswell, like indie or soft songs like Locket by Crumb or Hey kids by Molina.