Hello,
I can totally understand that what you have written is what you very much feel at this moment in time. Most people hit periods of such in their lives for various reasons, and it can be crushingly depressing, and leave one feeling pointless, and without options to change things.
However, that is in most cases the perspective of a MOMENT, and not one that needfully will continue on. We are surprisingly resilient as a species and as individuals, and while we have very low points, we also tend to recover from them in time.
So take a moment to acknowledge that things are not great at this point, but that is not written in stone, and that better things can be found in the yet unseen future, including things that you cannot expect or predict. Random chance often changes ones experiences not only for the bad, but for the good also.
And most importantly, find some time to talk to someone. A relative, a friend, a colleague, or a stranger on a help line or forum, and express your feelings to them, and receive some feedback in real time which can make a big difference.
Myriads