You'll be ok, just keep hanging on in there.
We've really all felt that "What's the point?" feeling at some time in our lives, but you just have to keep going and you'll get through it and one day you'll be outside walking to the store or whatever and you'll think "you know? this is nice, it's a nice day, I feel ok and I am looking forward to something." and then it'll all be better.
Sometimes something big is wrong, but mostly people kill themselves because of lost love or feeling misunderstood. You have a home, you have a computer and you don't really want to die, you came on here to see if there were still any good people left in the world, since the world is feeling pretty shtty just now - but it's ok, there are some of us left and we're all going to be alright, I promise.
I remember reading about a suicide note, he said "I am going to walk to the Golden Gate Bridge and jump off, but if one person smiles at me on the way there, I won't do it."
I thought, well, you'd better be the person that smiles at people, I'd hate to think someone just needed one person to make them know that the world was going to be ok, and couldn't find a single soul in this life.
We're still out there, people hundreds or thousands of miles away care about strangers. Get through today and get through tomorrow and sooner or later you won't feel bad about the next day coming.