I have had the same opinion since I first learned about capitalism and socialism. I have always thought that socialism is a beautiful, Utopian system, at least on paper. However, as soon as you add humans into the mix, it all falls apart in the most horrendous ways. Socialism can ONLY function properly if every single person is altruistic (noble, selfless, and humane). In a nation with over 300 million people, that is simply not possible. As long as you have a few selfish people, socialism will always break down. History has shown us this over and over. Just look at Afghanistan, Cambodia, Czechoslovakia, Egypt, Ethiopia, East Germany, Hungary, Iraq, Libya, North Korea, Mongolia, Poland, Romania, Somalia, Sudan, Syria, Russia (USSR 1917 - 1991), North Vietnam, Ukraine, South Yemen, Yugoslavia, and so many others.
Capitalism, by contrast, is centered on individual rights like 1) private property rights, 2) the enforcement of contracts, and 3) voluntary exchange. If you want to have the right to own property (real estate or personal property like clothing, vehicles, electronics), want the freedom to choose between various brands in the store (bread, cereals, cell phone carriers), and/or want the freedom from your landlord or bank physically removing you from your home without due process, then you probably prefer capitalism over socialism.
Examples of capitalist nations are Australia, Canada, Denmark, Finland, Hong Kong, Ireland, Luxembourg, Netherlands, Norway, Singapore, South Korea, Sweden, Switzerland, United Arab Emirates, United Kingdom, and the United States. All of these countries are among the top 25 richest countries based on average income (USA Today, https://www.usatoday.com/story/money/economy/2018/06/21/richest-countries-in-world-based-on-income/35953213/).
Many people claim that Denmark, Finland, Norway, and Sweden are socialist or democratic-socialist nations. Please check it out for yourself. They are not socialist nor democratic-socialist nations. They are capitalist nations, albeit very compassionate capitalist nations. They are capitalist nations with strong social safety nets. But, they are still capitalist nations.
I am an evidence-based person. I formulate my opinions based on evidence. And based on the historical evidence, I cannot support our nation employing socialist policies. However, I do support compassionate social safety nets as long as the interests of every effected group are carefully balanced so that everyone can win from the policies.