Your right to own property is a textbook example of the social contract at play, because without that contract your "right" extends exactly as far as your personal ability to prevent me from taking it.
I have to use my social/economic power. And yes I am happy to "pay taxes" to them. Because I need them but not to a welfare/UBI-addict who just takes.
And whats up with assumption that everyone will steal from everyone all the time if it were not for Govt ?
Whether or not you personally agree to the social contract, so long as you own property or have personal integrity protected in any way by the functions of a state, you are a beneficiary of the social contract. In its absence, you have rights solely to the extent that the strength of your own limbs can ensure them.