What happens when we understand that the evidence does not point to some single LUCA (last universal common ancestor), as some scientists already are suggesting?
I find it surprising that we think life only arose once. I can understand that only one lineage made it so there is a LUCA. However, it might very well not be also the original form of life but just the furtherest back of the surviving line.
I'd find it cool if we could find any trace of a separate line. I certainly can't see that that is a big deal otherwise.