It's not dumb. It's human.
You can know, rationally, that there are a lot of reasons why people don't reply: everybody here has thir own issues, somebody might read and feel a lot for you but not know what to say, somebody might intend to reply later and forget to do it, somebody might write a reply and think it sounded dumb and delete it, somebody might start replying and be called away from the computer.... you can know all this but that doesn't change how much it hurts to feel ignored. You are not alone in feeling this, for whatever it's worth.