So; assuming that Life some how DID start from non-life somehow...
1. Was that Life eternal; or did it also manage to be created with a self-replicating ability?
2. If it could NOT replicate; how many MORE times did it have to self create until it did?
3. Now that it is ALIVE! what did it EAT??
The dividing line between "complex chemistry" and "simple life" is a matter of word definitions.
The books in my post above will give you a basic grasp of where the science stands as of a few years ago.