I have been here too. I am so sorry you are feeling so done with life. I get it. I don't want to hurt anyone or make anyone depressed along with me either. I guess that is why we are all here on this site, to see what others are doing/feeling.
My fix for suicidal feelings has been to focus on something to do. I find a class to take - I took baking. It was cool and cheap and I made something. Those little things help a lot. I gave up being happy a long time ago, now I just look to stay busy and the happiness shows up in little bits here and there.
It sounds like you have seen the worst of society and now you are just staying away. Maybe you could try one class/ activity with others where you learn to cook, build, make candy, arrange flowers, etc... I am a hard nut to crack and have found solace in these small funnish things at the community college. I am still in control, but I get to socialize and have other thoughts outside of my panic attacks and rage.
Im a newby here too. Thanks for saying hi, it helped me not feel so broken.
Hugs