In terms not only of prosperity, but also personal freedoms and rights, safety, standards of living, and education, what are the most successful nations on the planet?
The first-world democracies…ALL of which (including America) are significantly socialized, and have been for generations. In other words, you’re arguing against success sustained across generations.
Instead, what you’re probably doing is making the same mistake that most of today’s “conservatives” do, by assuming that socialism automatically refers to places like Venezuela and the old USSR. FYI, what they had was NOT the small-d democratic socialism practiced by all first-world democracies today. YES, the USSR had “Socialist” in its name, but names mean precisely squat. Just because a nation claims to be socialist means absolutely nothing. For instance, look at the Democratic People’s Republic of Korea. Is it a democracy or a republic? Of course not.
So stop living in right-wing-media-driven fear and get a clue that there’s a very good reason why the most advanced nations in human history ALL practice small-d democratic socialism, and stop arguing against sustained success.