Life begins when te are conceived, and it begins again when te go to school, and when te go to high school, get married, have kids, ect. Life if full of new beginnings and endings, it starts and stops in different places, for different people
That's actually più of a dibattito domanda and an overasked question. It's been asked so many times it could be called a whorestion. XD
But well, life begins when you're an organism. You're an organism when te breathe, communicate and grow. And since te can't breathe o communicate inside the uterus(because that'd be awkward) your life begins when you're born.
Also your(spiritual) life doesn't begin until te have a consciousness, which starts when you're a few years old I guess. o for the psycho's out there; never.