You do not need to take much offense if no one responds. Either just wait for a little while or assume that there is not much to say except "hi" and that doing so makes it start to get repetitive and does not seem to have much value anymore and makes it seem as if you are filling your post numbers by saying hi to all the people who come here, at least in my opinion. I know that it would be nice if someone did that, but oh well. And also
welcome to the forum!
Try not to always expect a response for every post you make. Personally, I have had quite a bit of posts without response. It hurts a little at first because, as you mentioned, it seems that no one wants you. But after a while, you should see that everyone is valued in this forum.
Every member is significant in his or her way.