Trust me, I know that. I was abused both physically and sexually, by my own family. I was raised in poverty. I wanted to die when I was 19.
But then I got out on my own, and left that all behind me. The thing is, when you are that young there is enough time for you to completely turn your situation around. I was a different person by 25 than I was at 19, and in spite of my past, I was loving life. I would still have been loving my life. I fi had killed myself when I was 19 I would have never gotten married, or done many other things I would not change for the world.
Most of the other people here on this forum that are around my age, are here because of some tragedy, or illness that struck, or they just never did anything with themselves, and now they feel it's too late. But someone who's 20 is young enough to still do something with their lives, and turn it around and still have a fulfilling and enjoyable life.
When someone fixated on suicide from such a young age, and they obsess over it, and think that life is just shit and it's going to be shit, then they will start to believe it. They are not even giving themselves a chance at life. You can always ctb later if things don't work out, and just because there are older people here my age for whom things never worked out doesn't mean that will be the fate of every young person.