DuckThor Evil
Legend
Heh a spoiler quote.
It's because the tech relies on taking massive (millions or billions) of lives in order to work. I think that would be considered evil/renegade not to destroy it and prevent future generations/corporations/governments from putting it into use. Even if you want to keep it to just study in order to defeat it, it's likely someone will steal the tech and try to use it.
In fact, Cerberus wants to find a way to use it. In the storyline, as its presented, that would mean using other races. Ceberus being Humans first and Aliens are to be sacrificed in order for humans to survive if needed. And that would be a VERY Renegade/Evil thing.
Regards,
SB
I didn't really see the "using" as in using other races to operate the machine, but using the data and technology to fight the reapers.