Huh? Star Trek is absolutely communist. They've abolished money, classes, even the state depending on how you define the Federation, and people are free to live their lives however they'd like with all of their material needs fully met.
Communism and socialism are big ass umbrellas that encompass many philosophies with a good amount of overlap. Sounds like you have more of a problem with central planning than with communism. So do a lot of communists
The main difference in them is the driving principal of your behavior. Communism says you should do what the state says is most beneficial for society. Socialism says you should do what you feelmis most beneficial. Granted it's extremely generalized and far more nuisanced than that, but overall, it's not wrong.
Ending world hunger is tackling corruption in chaotic places in the world. Not an easy feat. Just look at how fast the taliban took over when the US pulled out, or how corporations (capitalist and communist alike) buy from slave labor states
Definitely strive for it, but pointing at economic differences is circle jerking
The political instability many nations experience today didn't develop in a vacuum though, the US and UK in particular (also others) have their fingerprints on much of Latin America and the Middle East, and much of that interference was profit-driven
No doubt power consolidated more power and are at fault for the problems in the world. But other countries follow suit and few separate themselves from the pack. The majority of people around the world are apathetic at best and only interested in their direct social/family circle and that's the biggest hurdle for global unity
I'm honestly surprised that it didn't happen right after Brexit. There was definitely talk of unification so people in Northern Ireland could continue to be a part of the EU and visit the other parts of the island with no Troubles. (Pun absolutely intended)
This is actually not true. There is enough food, shelter, and capacity for basic amenities for everyone currently alive to live comfortably. There are logistical challenges in getting the goods to the people who need it, but that's also technically possible.
We just can't all be driving Teslas and living in McMansions