User blog comment:The Milkman/No Love For Leviathan?/@comment-4947725-20120918053701/@comment-24174486-20120920052119

How "new" the Catalyst's problem is arguable. We've known that the Reapers consider themselves to be organics' "salvation through destruction" and were told by Vendetta that the Reapers seem to be the servants of the cycle rather than the creators. It's really the same as ME2: you know that the Collectors are abducting humans and working for the Reapers, and you only find out exactly why in the end.

To argue the entire final dialogue is centered around organic/synthetic conflict is easily proven false. While the Catalyst gives its opinion on each choice based on its problem, every choice ends the Reaper cycles. The Catalyst tells you that it wants to find a new solution; that it wants to end the Reaper cycles. It's a little sad that people forget that you've convinced the creator of the Reapers to help you stop the Reapers.

And now that I think about it, the motivation behind the three characters representing each choice—Anderson for Destroy, the Illusive Man for Control, the Catalyst for Synthesis—touch upon three prominent and recurring themes in the series—stopping the Reapers, humanity's place in the galaxy, and organic/synthetic conflict.