So "fighting Reapers by all means", right? No victory is good without losses? Ok, I can write stories like this myself too. Here we go:
Once upon a time there was a mysterious army of Rapers. Every 5,000 years or so they would come and rape the entire galaxy, except for the most primitive forms of life and plants. Nobody knew why they did it.
Meanwhile commander Pijack lived this own life. He was a good soldier fighting for several years against exebicionists who accepted Rapers way as a key to a brighter future. He was able to kill one Raper once, but it was hard. Then he killed another two, but lost his brother, his girlfriend and his beloved space hamster. Everybody cried. Commander Pijack almost died couple of times, but was miracly saved. He defeated a whole bunch of pedophiles who worked for Rapers to transform kids into new Rapers. For that Commander Pijack earned some respect from other species. They still wouldn't believe him about Rapers though, against all the evidences.
Then the real war with Rapers started. Everybody knew it's going to be hard and many will die. But they still believed in Commander Pijack for the all great victories he has achieved in the past... Well, too bad! Because when Commander Pijack thought that he just got himself a Big F*cking Gun that suppose to kill all Rapers once and for all, a little kid came down on a glowing platform.
The kid explained that he created Rapers because he was scared of being raped, so Rapers were raping the galaxy to stop the raping. He offered a solution. Commander Pijack could control Rapers himself, raping bad guys only (although he would never to have sex himself); he could destroy Rapers, but his exebicionists friends would die along with Commander Pijack's parents being raped in the most brutal way; or he could merge with Rapers to create a new form of life of "happy Rapers". He also could refuse, but, of course, then everybody would get raped again and the whole cycle would continue.
Wow, isn't that a bittersweet ending? Don't you feel victorious for Commander Pijack? I claim this the best art humanity ever seen and want my Pulitzer prize now. And don't you dare to judge my artistic integrity, you are just a minority anyway.
^ THAT idiotic story explains pretty well how I felt about ME3 edings. Like an idiot.