I wouldn't say that evolution doesn't deal with creation at all. Sure, the party line is that abiogenesis is not part of Darwin's theory, and strictly speaking I agree. However, let's not pretend that what we know about evolution by natural selection doesn't tell us anything about the origin of life.
Neo-Darwinism postulates mindless, purposeless processes that range from the random (DNA recombination) to the deterministic (natural selection) which have operated on ancestral systems to form the ones we see today. Contemporary species derive from ancient ones via mechanical processes, not purposeful design. The biological structures in organisms today derive from those in their ancestors. When it comes down to it, we can't separate the process whereby species have evolved from the very concept of life itself.
Isn't the success of Darwin's theory in postulating these processes reason enough to believe it could tell us about the origin of the processes themselves? Certainly the notion of self-organization, though ostensibly non-Darwinian, follows the logic of mindless processes giving rise to complexity. Success in selective struggles could indeed explain the origin of the replication devices that predate our complex DNA systems. Any material mechanism is superior to the sort of speculation about 'purpose' and 'intelligence' that has never yet proven useful in the biological arena.
Evolutionary speculation concerning origins truly has a long way to go. However, let's not underestimate the worth of Darwin's theory in the search. This is inherent in Darwinism itself: distinctions like 'origin' are matters of degree, whether for species, biological structures, or life itself.
The dark nursery of evolution is very dark indeed.
Brad McFall