Dear brat, excuse me if this isn't very eloquent but it comes from the heart.
You know what I have experienced because of what I've posted on this forum, and I am certainly one who has struggled with this a lot. Especially feeling like a burden. This is just my very humble opinion below, throw it out if not useful or helpful.
I don't think it's ever the best choice. To me it is rather irrelevant if it is rational or not. Simply because even if it is rational it presumes we have a knowledge of the future, including on how that decision will affect people perhaps we have not even ever met. Simply put though also, for those who do love you, it would be devastating. The parallel to physical illness falls short, the physical illness takes control of one's future. Family or friends see it conversely as your choice, not just an evil thing out in the world (illness and it's related suffering).
I hear 3 (and there may be more) primary issues in your post: fear of being a burden, pain fatigue (little spoken of and I believe a HUGE factor in many suicides), and a wish for relief. Can these areas be helped? We are all a burden at times. Yet in ways we all give. And we may not be a burden to some. The pain needs management- better meds, aqua therapy, eating, sleep? The future, can each day be changed, even a little? Reverse the sleep schedule back, find (as ITL said) the courage to speak words of truth to your children and ex, to be assertive? To walk the dog (even a few feet). To know, dear brat, most of all, that you are not even aware of how one kind, wise, and supportive word you say (on the forum or otherwise) can impact others for great good, and has, and does, and will. It can save a life, or contribute to ending one- that's not your style and so all the more very very necessary that people (LIKE YOU) of kindness exist.
If we turn this on it's head, paradoxically I think feeling very old young helps us think young as others age. Similarly, our fear of near everything removes our fear of what virtually everyone fears- death and other large issues. Because of this we can live with different priorities. We can chose to say or do or notice things others won't. We likely won't be superficial. We might care or understand when others won't or don't.
Is it always one's right to choose- of course. Do I think that it's the 'best', no, especially a huge loss in the case of losing you, I know and love and am grateful for all you've done for me. Can the sheer will, faith and bravery in 'not' doing it bring great good and a great example to help others? I believe so.
And when you can't do or fight anymore, you know that's your cue that you need others- a T, family or friends, your friends here. That's the time hopefully others/ we can hold on to you when you can't and give you something back for all you give. I don't think when that happens it means that suicide is a better choice, I think that's when it's your internal indicator there has to be a different change. The rest is a PTSD lie.
I hope I can be so bold and a bit 'gross' to say this, because in an odd way it helped me. When 'covering all the bases' in my planning at one point, including trying to figure out a way not to be found, I read when people drown (by ALL reasons) they are found with their arms down- the body's way to try to 'push down' as though it were a solid surface and save themself. Which made me think, and I intuitivey somehow know this, I know that if it comes to suicide for me I will regret or know it was the 'wrong' choice at the last moment when I cannot change it. Therefore, personally, if I end up going that way I hope it's because I'm not rational. Then I will be a victim of something I tried my best to overcome but could not. But it reminded me of how violent an act it is, murder of one's self, really. Which that detail seems to get lost in the blind pursuit of trying to simply make the pain stop or the grief and shame of feeling like a burden and responsible to 'remove' one's self.
I think finding ways to stop having to accept your family's actions when they are abusive and disrespectful, and stopping re-living the thoughts and experiences, will make a world of difference. And TLC, self-care, getting sleep, forcing yourself to eat. Apart from the physical pain, it's no wonder so many of us feel this way. Going through a trauma (and you've had many) is one thing. Re-living (and hence going through it again and again and again) would have anyone feeling like this if you ask me. Just an example thrown out there, a trauma on one occassion is one thing, feeling like its happened 50 times/ year is another. Who wouldn't feel this way? The key is to heal it. You can. Most conditions have no cure, but we have to learn how to live, just each day.
((((((Dear brat))))))) :inlove: :hug: , xox.