Now, let's extend your idea. Everyone can vote with their dollars for what they want to have in their lives! That way, no one is forced to use products or services someone else imposes on them. Now wouldn't that be the fairest system of all?
I.e. let's assume all of government is composed of:
Welfare
Education
War/Military
Police/Protection
By default, individuals start off giving in 25% into each bucket. You know, you could even put limits... e.g. "no more than 70% into any single bucket" and "no less than 10% for any single bucket".
These are just examples, obviously it's not perfect and/or ideal. But the fact that in our modern/digital age we haven't even considered and tried such a thing smacks of absolute hypocrisy. We don't "govern" ourselves in any sort of remote way, and to tell us so by virtue of "noble democracy" is an outright smack in the face if you ask me.