I don't think the society is bright enough to accept voluntary payments to the government. Whenever I step out in the street, I see what kind of people are walking. Definitely not the charitable ones.
So, why do you pay your internet/phone company? Or your electric company? People are going to want to pay for government services they use, or ones they believe would be beneficial to society. Even from a security and medical perspective, it costs way way WAY less to take a homeless bum off the street and put him into a shack with a bit of food money, than it does to keep policing him to make sure he doesn't steal of cause issues, and to treat him for major medical issues he gets from living outside without food. I would think security and medical companies would implement this to lower their bottom line, but this is something that governments don't often realize, and thus ignore.
People won't pay. Not at least here where I live. They will probably steal electricity, water, internet. Hell, some of them are doing it now. Maybe US has some kind of utopian society but I know the society I live in too well to think that would work.
Sounds like you live in a dictatorship or socialist country.
My country is full of people who believe that if the government does not pay for it, nobody will pay for it as well.
But when they have to, they do.
Even my garbage service is not government run. You pay a garbage service to come pick up your trash. Otherwise, you would be stuck with trash piling up in your living room. Sure, some people throw their garbage in dumpsters or even take their garbage to the dump themselves. But the convenience of only spending $10 a month to have a company come out twice a week to pick up your garbage is so much easier.