[DasIch]

The concerned citizens do pool their funds together to pay for their own defence, they do this with a system called "government".

[zzzzzzzzzman]

You are correct. So then why do those same citizens yell at me to pay my taxes, when I am not concerned as they are, and don't want the sub-par and expensive defense services they are providing me :)

[TeMPOraL]

Because you're benefiting from those sub-par services anyway. They're still better than none at all.

There is always an option to unsubscribe from living in a society - it's called "renunciation of citizenship".