I second Freak's response to your post.
As for the replies, that's a question that is periodically asked here. PC is a huge community, so not everyone can read every single new topic: there's too many.
Some of the "regular" members (myself included) usually try to write a reply in those topics that go unanswered even if we don't have much to say. And this is so no one feels ignored or not important enough.
This is a huge daily goal that I have for myself. On bad days, unfortunately I don't reach that goal. But that doesn't mean that I don't care. Or I view those people as "unworthy". I've felt as though I was pointless being in life too many times to count. I don't want others to ever struggle with these same emotions, and feel alone with it. You aren't alone honey.

Best wishes to you!