As Lebbie said, where we're born can either be a "lucky" leg-up of opportunities, or a hurdle that's nearly impossible for
choosing our way out. That's why third world nations have lower life expectancy rates and higher infant mortality rates than first world nations.
There are still places in the world where simply being born
female can mean you'll be disowned and sent to an orphanage, won't have access to a full education, are denied birth control, can be sent to prison for being a rape victim, may not have the right to vote or even drive a car, or are paid 0.75 cents for every dollar men earn doing the same job.
Your favorite PM was "lucky" to be born in England, at the right time in history. Our US President was "lucky" to be born in the US, at the right time in history (but that doesn't stop the "birthers" from claiming he's a Kenyan and his Presidency is illigitimate

)
Whether you want to call it Luck, Chance, or Serendipity....it still matters, and has great impact on our lives.