it's ok to think that way. i tend to do the same quite often, but in the end i always decide against it. not really for the hope of a better life, i don't even know how possible that really is seeing as life can do the most horrible things to me at the worst possible moments. i've nobody there to support me either, my parents can't possibly be better than yours, if anything they're worse. and my siblings aren't any good support either. one of my brothers is doing just as bad as you, maybe even worse. he never gets out of bed because of quarreling parents and all those insults and additions to his stress. but he is too stubborn to end his life just because of them (he'll never give them the pleasure or grief of having killed him), he's even too stubborn to commit a crime that would make the world a better place for many despite me giving him my full support.
i live in that same place, and am kind of happy in the whole mess. probably because i got a job. lose that and i'll be way below 0 again. work is such a great place to get away from a house where nobody could thrive, but it can still break me down quite a lot with too much stress some times. i'll get through it though, i swear i will. if not for anything else, then for those few good moments i have with my daughter and all of the friends who are there for me (or would be if i just let them) rather than trying to such the last sliver of life out of me.
i'm allergic to stress combined with a bad consciousness btw. even just a little bit of bad consciousness, no matter how small the thing was, will throw me into an endless spiral of darkness if i get too much stress hormones in my body. i'll start expecting the end of my life and add to my stress instead of trying to find out how to relieve it, and in the end i'm a tense bundle of too much anxiety. "i don't want this. it would be better if i never existed". i was there yesterday, today i'm closer to getting annoying things over and done with and relieving some of my stress. maybe i'll feel alive again by the weekend. it took me really long to be able to consciously break the cycle of doom that my mind manages to make me, but it is possible. and living is so good that it's worth just barely breathing through all the suffering.
and just to say, i'm not that strong. people often think i am, i've no idea why. i could break at any moment, shatter into pieces so small i'd rather call it dust. but i mend the cracks i find the best i can. yesterday i started building a new house on a norwegian minecraft server, deciding to leave any and all matters to today, no sooner than 11am. somehow it worked, and i got some sleep tonight. and today i could finally start thinking constructively about solving a couple issues. still haven't gotten myself out of that house, but i'll get by till tomorrow at least. maybe things will even get better tomorrow.
encouraging myself like this, i suddenly notice that the sun is shining, and i like it. i think the stress hormones are finally dissolving, leaving me able to cope a little better. i still don't trust i'll be able to get through it without a scratch, but i'm also not too sure that there's any point in ending my life.
it's interesting how the brain can work against us, but by taking some time to feel whether the air you're breathing is fresh enough, and air out if needed, you can trick your brain to think it's not that bad after all. i know that's not easy with constant reminders from parents who simply refuse to take things easy, but if you can just get a single moment without that stress, it might help enough to get through another day. try turning your thought from "i still can't get a job" to "i still can apply for more jobs (yay!)". pretend it's the best thing that could ever happen, think it again, and you'll notice that you almost believe in your own trickery. i wouldn't have survived if i didn't start making up ridiculous life-saving techniques like this. i'm feeling better than i've done for years, even in a home not so unlike yours.
i'll keep practicing until i believe i can fly. not planning to jump off a cliff to prove it though.
(well, since you are you, this might not work at all. but i'm sure there is something for you as well, somewhere, if you just look enough. you might even need help from a friend or therapist to find it, but this world is so big is has to exist somehow. my brother says i tend to simplify matters too much, and that might be true. i simplify matters because for me, it's easier to deal with simple matters.)