i'm sorry to hear that.
i really hate that feeling, thinking of ourselves as a waste of space. there's times i just want to try to end it again but the depression soon turns into anger almost when i think about the problems people in all of our situations suffer - we're not a waste of space but without having anyone to care it feels like that.
it's something that's almost out of our control, my social anxiety began from a bad upbringing and got worse thanks to the bullying in high school.

reading people's posts here and sounds like they went through similar things.

honestly though, i know it will sound generic but you're not a waste of space. i used to think exactly the same but i found a passion i could dedicate myself to, eventually my results in bodybuilding became better and better and now i can't go anywhere without someone making a comment (which irritates me beyond belief because they equate bodybuilding to the meat-head stereotype)

is there something you're passionate about or a dream/goal you've had but maybe tucked away over the years?

one thing loneliness and isolation affords us is time to dedicate to a passion or craft!
some of the best musicians and artists who've ever lived suffered anxiety and isolation too.