im a nihilist because it's really comforting to know that no matter how much I fuck up, nothing will change. Everything will stay the same, the universe will go on without you. No afterlife, none of that bullshit. Being dead is like sleeping, but never waking up again.
You should live life only if you want to. You live for the endorphin in your brain, for being happy, but for now you aren't feeling happy.
Nothing is stopping you from killing yourself, but there might be someone emotionally attached to you that you don't want to negatively affect. You feel limited; you're barely dragging along with everyone else, just to be able to make the ones you care for happy for the sole reason that they have memories attached with you.
If you want to die for something you did wrong, don't worry about it. Move far away, start your life over again, get a job, you don't even to get a girlfriend, you'll do just fine with yourself.
If you want to get out of this cycle of depression, I think you'll have to start getting comfortable with yourself.
This is why nihilism is so heartwarming for me.