You're right in regards to sample size. However, one thing this argument often ignores is that the Earth is 4.5 billion years old. Life is 3.5 billion years ol

You're right in regards to sample size. However, one thing this argument often ignores is that the Earth is 4.5 billion years old. Life is 3.5 billion years old. The Earth was hot molten rock up until about 20 million years before life began. So we went from Zero to Life in 20 million. Once created it was so successful that it took over nearly every part of the Earth in a multitude of evolving forms. It seems improbable life makes it's appearance so improbably early on Earth that perhaps the only explanation is that life isn't so improbable after all. Perhaps it's even highly likely give the physics of the universe.