nikola8 wrote...
An epiphany I just had:
The destruction of the relays in the ending is meant to be a symbol for freedom. I'll explain: in ME1, Sovereign explains that the Reapers created the relays so that the civilizations of the galaxy develop along the lines the Reapers decide. With the relays being destroyed (I'm not arguing the logistics of that compared to The Arrival here), the civilizations of the galaxy no longer will develop along the lines that the Reapers have drawn, but instead are free to chart their own path, ie. they are free.
I thought about this too, and at first, I thought, "Okay, maybe destroying the mass relays makes a modicum of sense." Then, I realised 2 things:
1. If this was their intention, it was very poorly conveyed through the narrative. If ME3 was intended to be a story that people could play through and enjoy completely without playing either of the first 2 games, why didn't they put anything in the plot development that would lead a person who has not played ME1 to this conclusion? The only answer to this would be bad writing/editing. Putting things in that reference the first 2 games is great for all of the other plot threads, but not for a central part of the conclusion.
2. If the purpose of the mass relays was for life to evolve along the lines that the Reapers desired, this would presumably be so that they could herd all advanced organic life into a central location where it would be easy to bust in and annihilate them all. It still doesn't make sense for 2 of the 3 endings:
a) It kind of makes sense for synthesis, because presumably all life would be "rewritten" and evolution could have a completely fresh start.

For the control ending, life is still going on just like it did. There was no genetic "reset" button. Species will continue to evolve from where they are, which is pretty far along the lines that the Reapers intended. You aren't really changing the course of evolution by destroying them. Furthermore, Reapers still exist (presumably controlled by Shepard), so why not mass relays? It doesn't really make sense.
c) For the destroy ending, ditto the control ending about there being no genetic "reset." Most importantly, in this case, the Reapers are completely destroyed. Thus, there is no danger for species in evolving in the way that the Reapers had wanted, because they can no longer be harmed by the Reapers. The entire reason why we would not want to evolve along their path no longer exists. So why couldn't we continue to evolve this way? It doesn't make sense!
I think that at some point, what you are saying was probably what the writers were intending. However, it seems like so much was changed at the very end, they did not fully consider the logic behind the relays' destruction. The
only reason that I can fathom for every ending resulting in the destruction of the mass relays is that BioWare has a future title in the works that relies on all of the relays being destroyed.