Very few people can comprehend how terrifying murdering someone is. The moment you pull the trigger, you realise that your life is over, you have passed the point of no return, there is no going back.
You will either live life on the run, in prison, or dead.
Many mass killers, whatever their cause or motivation will say that the day of murder is by far the worst day of their life.
As exciting as it might seem to massacre normies, those few hours would have been terrifying to Elliot, and that's what hurts most, knowing how much he suffered on his last day.
Elliot said he did not want this to happen 'humanity forced my hand'
Up until the very last second of him stabbing his roommate, there would have been a faint glimmer of hope in him. Having your hope fall from 0.1% to 0.0% might not seem that big of a deal, but is far bigger than the fall from 99% to 0.1%
Many people innately possess little to no empathy, or can disregard it when they want to.
All life is a struggle, do you really think a species could survive if none of its members could handle killing?
I won't scatter your sorrow to the heartless sea.
I won't see you end as ashes.
I read on another board a confession from someone who claimed to commit murder of someone he disliked at a party by waiting until they were passed out from all the alcohol and forcing them to drink until they died of alcohol poisoning.