system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: I don't believe Socialism can work

I learned in a class that Socialism has failed repeatedly throughout history, and when it fails, people claim that it wasn't really Socialism. The Scandinavian countries are Socialist, and it appears to have been working for them. However, these countries have a population barely the size of New York City, if not lower. The professor's point was that Socialism works through uniformity, but with the decline of birth rates, countries have to rely on immigrants to offset the decline in replacement. This leads to further problems. Socialism seems great on paper, but how can it be sustained? I am not trying to say "the US should be Socialist," I just want to hear people's opinions on this matter.

UPDATE: going to class in a few, then work right after. Probably won't be able to adhere to the 3 hour comment time. If this has to be deleted, that's okay! People have already been very helpful in educating me. Thank you all!

UPDATE 2: Just got back from work. Wow. Y'all are great! Thank you for taking the time to respond. I know I may come across as ignorant with such a blunt title, but I sort of posted this in a rush without thinking how close minded it came across. I am thankful y'all are helping me learn, and giving me a different perspective on the matter. If I wasn't so exhausted right now, I would take the time to respond to each comment. After a good nights sleep, I'll tackle some of these responses in the morning! TL:DR, thank you for educating me on a topic I really do not know a lot about. I really wanted a better perspective, and this is all very helpful.
gpt
I think you need to do more research on Socialism if you want to make a claim like that. The Scandinavian countries are not socialist, they're social democracies. The means of production are still privately owned there. 

If you decide to read up on Socialism, here are a few things to consider:


Did Socialism fail because of bad policy or because of imperialism?

Where is the success of capitalism?

Is capitalism ethical?

Are there benefits from having privately owned corporations?

What do those owners actually do?

If socialism limits innovation, how did the Soviet Union win the space race?

Isn't Eastern Europe in its current condition because of imperialism?

How do the conditions of Cuba and its people compare to other Latin American nations?

Wasn't the Soviet Union trying to unify Korea and liberate it from imperialism?