User blog comment:Ygrain/EDI and the geth: their purpose in the story?/@comment-5337704-20120727095430/@comment-5337704-20120729114127

That is actually why I like the choose your own ending option, you can pick what makes most sense to you (extended). Even in KOTOR, they had a two door option, just happened a bit earlier in the game.

Synthesis: Does not change the lifespan, but it may be possible, is what EDI says in the extended ending.

Krogan males are warlike, but yet they are peaceful now? To me thats a big change from their diversity, I dont have a problem per se with anyone choosing that ending, because the games is tailored what choice youd make, but as Ive said a lot of sci fi books and ruined that theory for me, cant imagine peacefulness and freedom lasting that long with limited resources, and if you rather have peace than freedom, you lose a lot of individuality, (diversness)