Origin of life without gods is abiogenesis. Evolution isn't about the origin of life, only how it developed after it already existed. The vast majority of Christians and other theists have no problem with evolution, just abiogenesis.
Originally the TOE included the first life form---a simple, one-celled life. DNA blew that error out of the water, so now most evolutionist avoid the first life form guess out of the discussion. It is not Christians who have a problem with abiogenesis, We accept that God did it and most of us do have a problem with a theory that has no real scientific evidence to support it, as all should have. It is the evolutionists that have a problem with abiogenesis because they have no idea what the first one was and their first guess was proven wrong.