Difference in nature or in degree?

I have huge doubts about the existence of the State. However, I have grown up with having a State. My reason and my experiences and habits have a conflict about the State. Logically, the State is always a violator of the individual liberty. Historically, the State has taken upon its arms many functions in society that have rarely been given freedom since. Roles such as the Educator, the Doctor, the Priest and the Road-builder are more often than not played by the State. The Policeman and the Judge are roles even libertarians want the State to keep, even though everything else is set free.

But as complicated the debate is, the whole thing pretty much boils down to one thought: Is there a difference in nature or in degree by having many individuals, and many states/state institutions?

An example: I have to take a shit. I must do this alone (or have a nurse on a payroll). Every individual goes to the toilet alone. This is accepted. No-one, not even the biggest statist, pictures the State as having a role in the individuals' toilet trips.

Now lets jump over to law-enforcement. Almost everyone casts the State in this role, and exclusively so (give or take a few private security firms). But how come I don't even get the option of protecting myself? Most people prefer going to the toilet alone, but a few need help or want help. Most people prefer to have an agency or firm to protect their property and bodies, but a few want to do so without help. Why the huge separation of state-participation from one action or choice to another? Why the State's almost complete absence from one area of actions, and the complete monopoly for others?

I don't think the difference is logical. Taking a shit is a natural thing no-one can do without. Being protected from violence and theft is another one. Having a monopoly of the individual on one area and the State's on another has, I think, to do with nothing but habit. The difference is in degree, not nature.

A straight forward solution to the logical error of the different degree of State-participation: Abolish the State.