Speaking as a small “l” libertarian, I think the simplest summation of libertarian ideology is “my rights end where yours begin.” That is to say, we should feel free to do whatever we want so long as it doesn’t infringe on the rights of others.

Gay marriage? Most libertarians would probably agree that the government has no business determining who is married or not.

Drugs? Most libertarians would probably agree that the government has no business determining what you put in your body.

Immigration? Most (true) libertarians would probably agree that the government has no business in determining where you can live and work. This is also, in my opinion, the litmus test for self-described libertarians. If you’re in favor of restricted immigration, you are not a real libertarian. This is why although I’m not a big “l” Libertarian, I’m proud that the LP platform always includes language favorable to open borders.

Business practices? Most libertarians would agree that as long as you aren’t engaging in fraud or reneging on a contract, you should feel free to do whatever you want.

It’s only when you infringe on another person’s freedom do libertarians feel it is necessary for government intervention. This is why the libertarian community is heavily split on abortion, because it depends on whether you classify the zygote/fetus/whatever in the womb as a person/human life or not.

The libertarian movement tends to attract a lot of rich white men, who are mainly in it because they like lower taxes and less interference from the government on things they might be interested in (drugs, gambling, prostitution, etc), but it is also home to people like me, who genuinely believe that maximizing everyone’s freedoms is what’s best for society.