Brutus's Moral Dilemma

Brutus is facing moral dilemma and he is torn between the two sides. One one side there is Caesar, his good and loved friend. On the other side there is his beloved city, Rome. Cassius thinks that Caesar will take over power, and become a dictator because of that, and because he wants power for himself, Cassius wants to kill Caesar. Should Brutus do what's best for Rome, kill his friend Caesar or should he save his old friend and side with Caesar?
If I were Brutus, I wouldn't kill Caesar and I have a few reasons for that. First of all, Caesar would be my friend, and I'd love him. At one point in the book, Brutus says,"I would not, Cassius, yet I love him well..."(1:2:19) this shows that he loves Caesar. Another reason is that Cassius wants the power that Caesar has for himself, and that is one reason he goes against Caesar. At one point in the book he even suggests himself as a better leader. The third reason is that Caesar also wants the best for Rome. Caesar is a strong leader, he is smart and a good general. We know that he is a good general and that he can lead a group well because in Spain he defeated Pompey, who was a strong leader as well (see 1:1:1 in book. its when they celebrate that Caesar defeated Pompey). As you can see, I have many reasons for not killing Caesar.