Many reasons

Sometimes it's because the sun shines too brightly that one has this urge to go outside.

Sometimes it's the heavy rain demanding for melancholy.

Sometimes it's the people laughing next door, adding more to the loneliness one feels.

Sometimes it's the joy of a party hinders one from working.

All the reasons out there are valid, that one thing, has never been a priority. It is okay so long as one is aware of the consequences.