It is a good thing that none of the endings doomed the galaxy because each race still has all their technology and all the information they had gathered about the mass relays before they went boom.SpiderJerusalem said:This is the denial I'm talking about.
The themes of the game were certainly not only self-sacrifice and self-determination. They may have been parts of it, but to say that the awful, hackneyed and convoluted endings that forced gamers to choose between three BAD endings (note as well, self-sacrifice doesn't mean dooming the entire galaxy while you're at it), which offer no conclusion, no resolution and only bring up more questions about the logic of the Reapers. Not to forget that they're all undone even further when Bioware amps up the whole "this was all a story told by a grandpa" aspect, toppling the entire cause and effect of the series entirely.
Beyond that the logic of The Reapers is very sound.
1. Organics are destined to create synthetics that will try to destroy organic life
2. The Reapers kill only the advanced species so they cant make synthetics that destroy organic life
3. In killing only the advanced species the reapers ensure that the unadvanced species and the future species have a chance at instance up until the point that they reach the level of technology that they become a threat.
It is a vicious cycle yes but a very sound one.