Life "wants" to spread, so perhaps an increase in the volume in which life can be found?
But why would life get more optimal? Evolution has finite optimization power, and it has long ago already reached this limit.
Evolution has finite optimization power
Huh? Even if you accept the estimates that your link points to, the amount of information in mammalian genome and optimization power of evolution are VERY different things.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.