User blog comment:Legionwrex/Why Destroy is the worst ending (besides refusal)./@comment-4237253-20120707170543/@comment-24174486-20120708213607

"BioWare has repeatedly stood by every facet of the ending, inevitable syntho-organic war included. The devs wrote the story and created the fictional universe, so what they say goes."

Exactly: BioWare has stood by the idea that the Catalyst believes that war between organics and synthetics is inevitable. Merely because the creator of the Reapers believes something does not mean that it is meant to be taken as any sort of moral. The Catalyst isn't an infallible figure.

"From a Doylist perspective, the Catalyst's logic, unfortunately, is fact, until the devs write or say something that proves otherwise."

Rannoch. Its implication that Shepard would die if they chose Destroy. The fact that you are able to make a final decision that does not solve the Catalyst's "problem".