He helps the NCR because, as you may know, they both have common enemies and ideas. However, he hates that they bully the folks and only help them if they see a profit out of it. So, my ex-desert ranger is generally nicer to the recruits, but hates the politicians.
He killed Hanlon for rp and benifitial reasons, and I wonder if he should kill the president in revenge for annexing and disbanding his "family" for a greedy organization when it comes to the main point.
I'm aware of the ncr ending being removed if I kill him, so I will take te independent route. Of course, I would even for many other reasons.
Anyways tl;dr, should I kill him or not. Please give an explanation.