y did brutus think killing caesar was the best idea?

rutus decides that killing Caesar is necessary, he is unwavering. Because he’s motivated by his morality, he rejects any suggestion that makes the conspiracy seem underhanded, such as the need to be bound by an oath. Having said that, I always felt that the conspirators, save for Brutus, were corrupt and in it for themselves. They were corrupt and their replacement of Caesar was not that much of an improvement. So, I'm going to go with no, it was not a great idea to kill Caesar.