Know it all.
Shaman.
I have a brother who is just like this and he is severely pessimistic about life and of course rejects all religion or anything contrary to his rigid denials of God.I see an absolute need for this. I see an absolute need for us to be immortal souls that can live in eternal bliss in the afterlife. Some people would say there is no need for that and the life we have here instead is all we need. I don't see it that way.
If we are nothing more than life forms that are just here to live and forever perish, then I see no reason to have a family or to cherish this life if all we are is just life forms that live and forever perish. If this is all we are, then we as human beings were better off having never been born in the first place. This life and this entire universe was better off having never come into being. This being the one and only life I will ever have is not any reason at all to me to cherish it and make the best of it.
To me, a person who is able to cherish this life and make the best of it in the absence of this grand purpose/meaning is nothing more than a simple minded animal. Nothing more than a simple minded creature that goes about its daily life that says:
"Welp, I will enjoy and cherish this life while it lasts. When I die, I die and that is it."
That, to me, is a simple minded animal not concerned with any grand purpose/meaning. But as for me, I am nothing like that. I am on a much higher level than that. I am able to see the big picture for what it is (the grand scheme of things). That being, if this is all we are as human beings, then there is no reason for any of it.
This existence is just nonsense and to carry on with your life and have reason to cherish and enjoy this life is just absurd nonsense like that of a simple minded animal and nothing more.
So you are not alone.
My brother says things like there is no reason to go into space or even to be interested in other worlds because he will be dead long before that, and no reason to worry about hurting the planet earth because he will be dead before it could ever affect his self, and I say he has two daughters (my nieces) and he says they too will be dead in due short time.
My brother and I are very similar to each other in looks and in temperament and this is our one (1) division in that I see absolute proof of a real Creator God and I have huge reasons to embrace the morality of life, while he adamantly rejects all of that.
One time around 1991 my defiant and mocking brother decided to playfully conjure up a "Demon from Hell" (his words) and so I agreed with him. He was surprised that I agreed as he expected me to scare away from it but I did not. As such in a very short time a truly ugly and dirty and wicked woman came to us and she went after him talking horrible stuff like telling him to turn against me and it is hard to explain the details but she was in fact a Demon from Hell and we both knew it. So we had to slip away from her and in time (a few weeks) my brother started making excuses that she was just some local tramp or just a coincidence, and so in about a year he was completely denying that the event ever even happened and he did not remember it very well and of course he decided that it just was not true.
What I find is that every person in the entire world has seen or experienced a Ghost or Spirit or call it whatever and people like myself accept that reality while many other people simply refuse to accept or believe and that is why we call non believers to be deniers and in denial.
Since there are so many people like this then I see this as a real form of abuse that our evil society imposes on people - especially in white Christianity Countries, because our schools are teaching the people garbage and Godless trash and so denial has become the force of the dominating class of people who want to do wrong and want to live in sin and so denial is the only weapon they have.
What you "MattMVS7" need to do is to understand your own brainwashing and then overcome it.