How Many Robot Fights is Too Many? Suspension of Disbelief and "Pacific Rim"

Over the summer, I managed to catch a few movies in the theater. One of those was Pacific Rim, a sci-fi film stemming from the Godzilla tradition. It was my husband and his friend's pick, but I was definitely willing to give it a shot mostly owing to the involvement of Guillermo del Toro. I loved del Toro's Pan's Labyrinth and The Orphanage, and read his Strain trilogy (perhaps more on that another time), so I'm willing to give him a chance even outside of genres that normally draw me in. And Pacific Rim was pretty fun; it had some interesting characters, in particular the female lead Mako Mori who subverts some traditional movie tropes. But, my nitpick-y self had some issues with it, and after watching the movie I spent a lot of time thinking about where I draw the line in my suspension of disbelief. Spoilers follow.