[Crush T Velour]

By accident, life could have evolved over billions of years elsewhere in the universe, and then landed on Earth via a meteor or comet or some other natural delivery.

Actually, it is worse than that.

Evolutionary Biology states that ALL life on Earth evolved from a single ancestor. This is argued for very compelling reasons. Yet, even though Earth is self-evidently hospitable to Life, and even though trillions of wet, protein-filled bags of lifeforms offer more environments for unique Life to originally occur, it has only happened once in 3.5 billion years (roughly one quarter the age of the Universe). Moving Life's origin to another planet does not solve the problem of its incidence here.

[joseph20]

According to today’s best estimates, the universe is about 13.73 billion years old and the Earth is about 4.54 billion years old.

You don’t think an extra 9.19 billion years, in which life could have developed elsewhere in the universe, is significant?