Libertarianism is quite common among young people, especially ambitious ones. But there are the consequences and most of us know what they are. I'm not American but I've seen the social problems created in part because of withdrawal of the safety net in my own country. It's bad in Canada, homeless crisis is through the roof, meth heads are everywhere in our cities. We used to have clean streets, not clean enough to eat off but not like this. When Canada took a major center right path with reform conservatives all this crap appeared.I'm a libertarian. Grew up with my mom and her side of the family as mostly Democrats and my dad and his side mostly Republicans. I was a liberal until my mid 20s or so until I started reading more extensively into libertarian beliefs and realized they gel much more strongly with me than what the liberal party has/had started to become.
I find it's possible to grow out of what you thought you believed it when you were younger. It's more of exploring the world around you and realize the pros and cons contained.Grew up in a Baptist fundie household, but never really meshed with the ideology. Perhaps it was youthful naivete, perhaps it was something else, but all through high school and into college I drank the libtard Kool-Aid.
Then, after a bout with homelessness and alcoholism, I mellowed into the center-leftist I am now.