When Gamora fought back about Thanos wiping out half her planet, saying it was fine and people were happy, he asked her if "fine" was starvation. There was just too many people. Thanos killed half of everyone so that the surviving half could create a better world, whatever world that may be.
I've read the comic, Infinity Gauntlet, and in that one, Thanos killed half the galaxy to impress Lady Death. That makes zero sense as to why. In the movie, however, he kills half of the universe so everyone can live in a paradise and won't have to deal with over population. He does it out of a good purpose, and he isn't doing this because he has so much power
The marvel universe, I am going to assume, isn't far off from reality in terms of population. There is more than 7 billion people on our planet. There are millions who go without food and several billion who don't have adequate healthcare needs being met. With increasing technology, it only takes a small amount of people to do jobs that used to require hundreds. More and more people will be jobless and that problem will continue to increase as technology advances.
It is also necessary to point out that the amount of forest that we destroy to make room for agriculture so we can feed that many people is unreal, as well as how many trees we chop down just to build shelter. We are draining this planet of resources very quickly and the faster the population grows, the faster we run out of resources.
Wiping out half of the galaxy (or in our case, the population of the planet) sounds terrible but it would also guarantee that the human race will survive much longer than it is going to at this rate.There would need to be a more intelligent method of decreasing the population though because just removing half of all life at random could leave the world with a big shortage of doctors, scientists, adults, children, or even a shortage of men or women.
Overpopulation is a bad thing I will agree with that. But Murdering half the universe is worse. At least overpopulation is potentially solve-able. With not murdering. But murdering the half the population potentially has even worse effects than over-population. He killed half the pilots while they were in mid-air. Think about it: How many accidents would that cause? And he killed half of professionally trained doctors. He murdered geniuses that may have come up with ideas the solve over population. And think of the psychological effects. Imagine seeing half your friends and family disappear before your eyes. That would cause some serious PTSD and survivor's guilt. Also potentially depression and nervous disorders. Thanos may have had good intentions, but MURDER IS STILL WRONG!
The reality stone was the third stone that Thanos got why didn't he just make the stones right then and there? He could have because the reality stone he can make anything he wants so why didn't he just make the stones using the reality stone? Is he really that stupid?
If he has the power to do anything he wants and manipulate reality why doesnt he just make the universe itself grow to a massive size and also make planets bigger and give planets more resources. Its the soul problem with the story. If he can do anything why would he do this or that when he can fix everything and bring back his home planet in the snap of his fingers.
Thanos has no right to wipe out the entire galaxy. His intentions do not lead to overpopulation. He is simply overwhelmed with power. He had an opportunity and he took it. He was wrong in his ways, as I was balling my eyes out at this movie for an hour after it ended. Of course, he did have some heart when he killed his daughter, Gamora. I can tell he felt bad, but he wanted to have all the power he could, which is just wrong. Wiping out the entire galaxy is not something that can be turned into a real issue. It was bad, and unnecessary.
I do sympathize with Thanos about preventing overpopulation, but him being presented as an environmentalist is unorthodox. Compared to Ego, Thanos is portrayed as more humanistic. I guess I can understand him wanting to prevent other inhabited planets from suffering the fate of his homeworld, but the brutality of his methods undermine the goodness of the end. The scene where he sacrifices Gamora for the Soul Stone, were his tears authentic?