Purpose of new year?

New year marks the finish of 1 complete revolution of the earth around the sun. Does it meant anything more? Y people celebrate? Whats the main underlying reasons among the main population?

For the working class, perhaps, its worth celebrating because of the holiday, new year and new year eve. It can also be for the bonuses, for the partying. Who knows?

For the businesses, it meant more holiday sales, the closure of the accounting books (varies according since theres also the financial year).

For the media, to sum up all the ups and downs of the year, boardcasting all the fireworks around the world, telling the world how good is the last year was. Congratuations!!! Come on...

For the family, it doesnt not take the new year, or even festivals to do something nice to each other, it should be a everyday thing, not just a one time event...i do feel these festivals now hold little meaning to me that is...

Another question: Did the earth complete its revolution around the sun in 365 days or did it not? Did the expansion of the universe, the collapsing of stars, the gapping black holes, the super novas change any variables that affect the gravationation force that maintain this revolution?