Yet other people pay for things for you now
Roading, Health, Defence, Policing,Education.......... to name a few
Infrastructure in general. Don't forget that you are using some of those things indirectly. Everything you consume will have an impact on those resources mentioned above.
But as a tax payer SaltyNZ is likely paying his fair share of these things - they're collectively owned and paid for. They are there for everyones benefit.
It's not like SaltyNZ is using an entire school just for him, or has the entire police force at his beck-and-call.
The signs and fences are there for the benefit of those who can't think for themselves.
But using that argument in reverse, his original claim of not wanting to spend money on things he isn't using, is addressed the same way. There are some people not using resources they all pay for. It's a community and we share the expenses. He might not use signs, but others might benefit from them, he might use healthcare more extensively and others won't use it at all.