Do Libertarians realize that if everything was privatized there would be huge swaths of land where wealthy property owners lease housing, and create contracts with each other to pay people to defend their property?

Poor people will always exist.
Poor people will always be in the majority.
And people in general will always commit crimes.

When they get caught, a subset of them will reject authority even if they're in the wrong, and private "property defenders" ("police") will handle them.

Try and figure if you're the type that would still be against an action you see a police officer taker, if it was under this hypothetical environment, and the person resisted arrest on these larges areas of privately property that they were renting a home and living on.

Do you have an issue with this?

Is it aggression if I tell you to leave my town because you broke the rules?

Is it aggression if you say no, and then I, or the people I pay, "force" you to leave?

Is it aggression if you try to resist that "force" and they arrest you?

If you would be outraged over the death of someone because they committed a crime in both "public" and "private" scenarios, then stop calling yourself a libertarian and face it: you just don't like authority.

Private property rights and the NAP allow for that behavior.

Now some wise people might read into this and ask, "well what if the property owner makes a rule saying no marijuana on his property"?

Or they might ask "what if they say renters aren't allowed to posses guns while on their property"?

Think hard about that one.

A realistic Libertarian world is a bunch of mini [private e]states. Hating authority will get you nowhere. Hating authority isn't going to magically make your dream world come true.

Defunding/Eliminating the police won't solve the "issue".

The issue is The State is too big.

You can't opt out of taxes when you earn income abroad.

It's really difficult to revoke your citizenship.

No land is private. The property you buy is a binding contract with the Gov.

Those are the real issues. Not your "don't tell me what to do" complex.