Have you considered the possibility that your attitude of not caring and assuming that nobody else cares is the reason you get the reactions you get?
You say you have no friends and nobody cares about you, but when you deleted your pages and quickly got messages and calls asking you about it, it was like you wrote them off as not mattering. Seems to me like it's not they who don't care, but you don't think they're worthy or capable of caring.
It's hard to care about someone who doesn't want to be cared about. Eventually those people who are trying will give up and go away. Maybe someday when you're wondering why you have no friends and are all alone, you'll realize it's because you actively sought to make it that way.
But what do I know? I'm probably just talking out of my ass.
I don't know anything about you, so I'm not remotely qualified to make any guesses or offer any advice. I don't know your story.
It sounds to me, though, like you are severely depressed and alienated. For whatever reason, you are intentionally trying to hurt yourself, and you are denying that anything about you has worth.
It's certainly true that, most of the time, most of our interactions with others are very shallow. Of course the people who read your website didn't care deeply and personally about you--they don't really know you. Still, though, the fact remains that they noticed that you had gone, and they cared enough to inquire. They may not be life/soulmates, but they are people to whom you matter enough that they spent some time and effort to check up on you. What do you think regular friends are?
Don't give up, Susanna. We're all lonely a lot of the time, but it sounds like there are people who know you and notice you. There may be a lot of others who you don't know about--in my (limited) experience, we don't usually know how much we matter to some people.