Birthday at 40 :)

So I recently turned 40 years old.  I hear a lot of people say turning 40 is "when it starts".  But, I do wonder what "when it starts" really means. Is it the start when your bones starts to loose their density, when your breasts start to sag, when you start to get hot flashes, start of a mid-life crisis OR is it the start when everything starts to get better.  Is it the start when you get wiser, start to earn a lot of money, start to count your days to retirement......hmmm.  I would like to think of it as the latter.  Turning 40 isn't so bad.  I am just another year older.   So cheers to being 40 :)