MasterOfAll

Chosen answer: Because his age is finally starting to show. He is after all the oldest member of the group.

MasterOfAll

Question: Would Phoenix have been capable of destroying all the sentinels in the future timeline?

Gavin Jackson

Chosen answer: Yes. But she was already dead in this film.

MasterOfAll

Question: Why didn't Magneto simply use the Sentinel-Robots to kill everyone at the White House in front of the camera crews to establish that using robots is a bad idea, completely shut-down the Mutant fear and never expose himself?

Answer: Because that is not Magneto's goal. He wants people to know about him and his cause. To bring other Mutants to his cause.

MasterOfAll