Is it normal to think that humanity is finished?

You mentioned 2 points.
Humanity and the world.

Inevitably our world will be destroyed (actually our entire galaxy) especially from the Andromeda galaxy that will twist and literally destroy our 'world' (let alone many other concerns with Earth surviving even that long).

Same as humans (who have only been around for about 200K years anyway. Its true we fight for the human race to survive, but realistically we expect (or hope) to continue to evolve with abilities such as flight, or even living outside of Earth's natural conditions.

We are not trapped, we are just going with the flow.

No, we are not doomed. Personally I feel that the a majority of humans are beginning to become aware of their humanity and come to a realization that we are all alike and its only a matter of time when everyone on earth will live together on this Earth peacefully. One of the few things holding us back from reaching this is the corporate greed that exploits many.

I had to stop reading after the third line. I don't feel like being depressed today. Its hard to find something which really depresses me and you just did it. Bravo my friend.

That's because you're only aware of an infinitely small piece of it.

I completely disagree with you that "the world is going nowhere". IMO it's going to hell very quickly.
The fucking representatives at the meeting which closed yesterday couldn't accomplish a damn thing but agree on changing one word in the agreement. No reductions in the toxins we're all pumping into the environment, just a piece of paper with some useless wording that changes absolutely NOTHING!

Dude you're a poet. You should consider writing poetry as a part time job.
Back to the topic: "One must imagine Sysiphus as happy" if you don't know where those words came from please find out.

Only the Sámi people are truly 'finished', the rest of humanity is quite clearly extant!

Well there's living, and then there's truly living. We're just half-alive mostly. I'm trying to find out what it means to truly be alive, never mind what humanity is doing. It's not my job to save us, I can do my part, but I'm much more interested in saving our collective humanity, what makes us human. I'm afraid we grow closer to losing every day. I think we're far from done.

"Every day feels the same, because almost everything that humanity can possibly achieve has been achieved."
The rapidly improving technology we have at our fingertips are seeing new medical breakthroughs almost daily. I really can't understand how you could feel like this. Perhaps you live in an impoverished area of society and have not seen the world in a global sense.

Let me guess. You're a teenage boy.

What a load of crap!