Greyfan wrote:But I don't believe in its existence... What makes something moral is widespread agreement; as times change, so does morality.
Since you don't believe in the existence of morality, your definition of morality is valid and sound in your terms, and I don't disagree with you - it's your choice.
But to those who believe the existence of morality, 'your definition of your morality' is redefined as 'ethics' and there's something else that's as objective as the absolute, which in their terms is believed and called 'morality' as the ultimate knowledge.
Because of the difference in the belief and definition of morality, the answer to "whether the ends justify the means" could be slightly different to some extent between us. Those who believe morality would have the belief in universal moral principles that give them a common cause to define and justify the end, which in turn could justify the means as long as the end is moral and worth pursuing.