Could RNA start life?

Life did not just "appeared" on earth out of nothing. That doesn't happen. Life in the universe should be viewed as something more like an "infection" it spreads around, and wherever is an environment suitable for development, it evolves. In the case of earth, according to historical data, during the formation of the solar system this planet got infected with life from the collision between what it was the original earth and another celestial body orbiting the solar system which already had life on it.