Then you would still not be completely free, you already state it yourself multiple times. You mention VAT and money "after taxes". You even state that VAT is fair... wtf.... Armed robbery is never fair. They should never ever get their sticky hands on your hard earned money (cash/bitcoins/gold/numbers on a bankaccount/rocks/etc.) In addition the government will still demand taxes for your garbage collection or property rights or what ever, and they WILL take it from you.
Besides giving a signature is perfectly fine, i mean if its your choice to make a contract with bank, whats the problem then? In fact the things that are forced upon you, without you needing to sign/forcing you to sign, THAT is the problem. That is suppression.
VAT is fair because it's essentially a fee for a service. People are working on the borders to sort out illegal imports, for example. This is a service and I feel OK paying for such a service. You are not obliged to consume those services and since rich people can afford to consume more they naturally pay more taxes in the form of VAT. Income tax, on the other hand, is not fair. In fact, it is unehtical because it basically means that your wealth does not really belong to you. The government gets to get the first cut and you will get the lousy remnants.
Giving a signature empowers the rule of law, which is corrupt in its roots. Because people are unable to enforce the law in a just manner, it should be discarded as an obsolete fallacy. What is more, contracts are often abused by including small prints in them to rip people off. I think people are giving out signatures way too easily. It is not OK to have pages and pages long contracts just to form a gym membership, for example. You're right about the things forced upon you without needing you to sign them first though.