I like Jordan’s answer. In another words, you’re bored.
To answer your question “Why are we here?” – We’re here to live. But probably this is not the answer that you’re looking for. Your questions are bad formulated, probably unanswerable. “Are we just supposed to work at jobs we don’t like to buy stuff we don’t need?” – If you want yes, if you don’t want then no. – would be my answer and it is probably not what you’re looking for.
When our minds are bored they will create things to act upon real or not real. More intelligent you are, more complex things you’ll create. Finally you’ll start creating paradoxes and unanswerable questions that goes full cycle, are really complex and serves no real purpose in your life, it just keeps your mind busy. This will consume a lot of your time and bring unhappiness.
How do you feel when you’re dueling on those questions? How is your state? For me it used to create stress and take out focus, making me unproductive.
Do you know the Socratic Paradox “I know that I know nothing”? How intelligent this question looks like, you can spend all your life talking about it but there is no point at all, it just goes full cycle. His mind created that argument to prove that he was the wisest man because he knew that he was ignorant while others didn’t. Well, he just proved himself more ignorant than the others also, didn’t he? Invalidating his argument. And we can go on forever…
I think it’s also important to note that every argument that mind can create it can create a counter argument. Everything that I just wrote you can find a way to argue against. It’s the nature of an argument.
Questions are very important but they should serve a purpose. So if the answer of the question can’t be acted upon or it’s not beneficial it doesn’t deserve my attention. That’s how I’m sharpening my logic.

Hi,
I can relate to somethings you’re experiencing and to what you’re feeling. You’re feeling stuck. And you created helplessness. But who created that you’re weak and powerless? You. You have enough power to create that you’re powerless (I know that sounds absurd and crazy but I don’t know a better way to put). The problem is that when we create such feelings and we believe that they’re true we protect this belief so we bend our perception of reality and of our life. If you bend your perception long enough you have the power also to change your reality. So advice such “don’t focus on bad things” don’t help and (sorry Anita) “stop wishing to get out” was even worst for me. Bad things are here, they are what they are. After long enough seeing that our life is bad, this becomes REAL. Bills are bills. Losing a car can be a big real problem, I lost mine.
If I can create an image of everything that you’re saying, it feels like you’re in a big hole and you believe that there’s no way out. Everywhere you go you hit a wall. And you feel isolated there also. If you keep trying you’ll keep hitting a wall. Life is asking you to change your approach. Look up or dig down. Find the way! And the way is different than what you’re used to do. What you’re doing is clearly not working. Do something that you don’t know. Take risks. Learn something new. Life is calling you to grow. Get out of the hole! That’s not your life.
And how to do it? First you need to change the belief that you’re weak and powerless. Can you frame this belief in an absurd way? Can you see the ridiculous side of it? If you can do that it will become difficult to keep believing it. And what are also the consequences of such belief? What did it do to you until now and what will it do to your life and to your family in the future?
Second. What do you want? You just wrote things that you don’t want. What are the things that you want? Can you do a list as big as you did with things that you want? And go after them, one by one? If you want to share with us, I’d love to see it.
You took 4 years or more building this belief and organizing your reality, so please have patience to come back. It will take some time to change your reality back.
Finally what helped me a lot when things go bad is to breath. It’s like putting your head out of this hole, when you’ll be feeling down put your head up and grab air. Take the time and breath deeply for some minutes.
An be grateful for every little thing that will come to help you come back, even if it is a drop of water, try to be grateful. It will bring your mind back to abundance.