Because killing yourself would also hurt people, likely way more than your life ever could. I’ve struggled with something similar myself, and my conclusion was that if I truly felt bad for hurting people, the only moral answer is to try and do better and improve.
Often I would resent having people who cared about me, because it would be so much simpler if there were no-one who’d miss me, or be hurt by my death, but it’s too late for that because I have a bunch of wonderful people in my life who care about me, even if I don’t understand why. Sometimes I wish I’d never met them, because that would make things simpler.
A few times, I’ve had the idea that a compromise is to withdraw from these relationships and sort of wean them off of me. There’s a word that captures this approach, decathect: “to withdraw one’s feelings of attachment from (a person, idea, or object), as in anticipation of a future loss.” The logic of this approach was that if I can’t be a good person who deserves the love of the people I love, I could at least reduce their exposure to someone shitty like me.
It didn’t work out, because as I withdrew, living became more untenable and caused me to inadvertently hurt more people. It was the worst of all worlds - I wasn’t really living, but it was still hurting people similar to if I’d just died.
Quarantine doesn’t solve this and neither does suicide. Especially not suicide, which is often a selfish craving in situations like this. I don’t say that in a judgemental way, just straight up, suicide is the simpler option for people like us. It appears deceptively like justice, and there’s a nice closure to it. I don’t think it’s unreasonable to consider selfish options when you’re struggling with life, but it isn’t solace or closure or justice or any of those things we wish it was. If it were so simple, you’d probably be dead already.
It sucks, and I’m sorry, but there is nothing that can undo the harms of the past. Sometimes putting in the work to do and be better can lead to some healing, but also sometimes bridges get burned and you’re trying to be better for the sake of people you’ve yet to meet. If you do truly believe yourself deserving of something so drastic as suicide, then surely the better “punishment” is to continue living through and past the consequences of your actions. Redemption exists in the better world that you stand to be a part of building, by being one more person trying to be better.
Unfortunately, it is as simple as just “do better in the future”, which is frustrating, but makes sense to me - if suicide is a not simple, but easy solution to the problem of harms caused, then redeeming yourself through life is simple, but fucking difficult.
I don’t know if it’s worth it. Sometimes I find myself thinking “I should have killed myself two years ago, and this wouldn’t have happened” when I fuck something up, and then suicide now is tempting in a “the best time to plant a tree was 20 years ago, the second best time is now” kind of way, even though that’s twisting the analogy to hell. The world will not be made better by your absence - if you have any sense of duty to the world or your loved ones, then it’s necessary to live with the weight of your past mistakes and move past them. Dying just puts that burden with everyone else, condemns them to a life of wondering "what if I had done Xyz differently.
For what it’s worth (very little, I’m a random internet stranger who has no knowledge of you or your circumstances), I would rather be friends with someone who has hurt me, but knows they’re fucked up and making genuine, continuous attempts to improve than someone who is completely apathetic and hasn’t hurt me particularly, but by fluke only. I think that our actions matter much more than our (stated) intentions (especially in situations where there’s a pattern to behaviour - I have unfortunately lost a few friends in this way), but I do think the intention counts for something. The fact you feel bad about what you’ve done means something. The challenging bit is to prove it. It’s not easy, and it might not even be possible to do such high levels of self improvement, idk even in my own case. I do know that it’s always worthwhile to try.
If life were a game where you lose if your net impact on the world is negative, then it’s not game over yet. If you die, that’s it, you get taken by the score screen and you’d probably not be too happy with what you’d see there. And yeah, it’s possible that you could decide against suicide and live a long life and die of old age, and still lose the game, if the net impact comes out to be not great still, but as long as you’re alive to read or think about these words, there’s still hope of making it through and levelling up enough that you can rack up the positive impact points. Hurt and help don’t cancel out like points in a video game do, but it’s hard to not think of “net impact” when contemplating dying in this manner. This might not vibe with you, but for me, it was and still is insanely motivating to know that there is still a non-zero chance of me winning this game, and what’s more, the possibility of winning is exclusive to paths where I continue living (even if often, I would rather be dead), and trying to be better (even if often, it feels like it’d be better for others if I were dead). Suicide offers control, the ability to decide how you lose the game, but it will always be a loss.
Whatever your struggles or your circumstances, I wish you the strength to steer into calmer territory, and the wisdom to recognise change. It feels weird to give advice when this is very much something I still struggle with, but this is me trying to be better. I might not feel especially hopeful about my own journey, but I do believe what I’ve said here, that meaningful change is always possible