The question hinges on what we mean by life. If it means biological life, birth can't be the start; it's more like a change of address. A fetus is already growing, responding, and developing well before delivery, and the same organism simply continues afterward. My opponent might say birth is when someone becomes independent, and that's fair as a moral or legal marker. But independence isn't the same as being alive. Calling birth the beginning of life feels like a useful convention, not a biological fact.

Here's a fact that trips up the birth line: a newborn doesn't always take its first breath for several seconds after delivery, yet we wouldn't say it wasn't alive before that. The other side's "breath of life" point is interesting, but it makes life hinge on one event with fuzzy timing. A fetus is already responding, developing, and growing, and the same organism continues afterward. Independence is a fair legal or moral marker, but it isn't the same as being alive. I'm honestly unsure where the moral line should sit, but birth looks more like a convention than a biological starting point.

We can agree birth matters enormously, legally and emotionally, and maybe it's even the right line for rights. But the topic says life begins there, and that's where I hesitate. Biologically, the same organism is already growing and responding before delivery and simply continues after it; birth is more like a change of environment. The breath argument also has fuzzy timing, since a newborn may not breathe for several seconds yet is clearly alive. So I see birth as a meaningful convention, not the actual start of life. I'm not certain where the moral line belongs, but this one feels like a marker rather than a beginning.