A somber blog entry. It's sorrowful to see what you are going through. It helps some people to know that most people unfortunately will have some kind of experience similar to something like this. So maybe that is some kind of consolation.

I am a bit surprised by your mother's reaction. But I guess there is some backstory to this, otherwise it seems like a really unusual way of reacting to such news.

As for what the point of all is. That is a really difficult question. I can't really tell you. If you think about it hard, many things do seem to be pointless in the end. I have heard from people who got kids recently, that things they thought were important before, now seem utterly pointless. I guess everyone will have to find an answer for themselves, but it can help to exchange with others what they think.
So, if it helps you can contact me on Discord or here