Your pension may come from off shore but you are receiving considerable benefits that taxation is required to meet both now and for the future. Caring for New Zealands' financial future is just as important as care for our ecological future. Those offshore corporations that peddle their wares here contribute zero to both and sure as hell wont contribute if things go pear shaped for us.
I am also paying tax on my income, just like everyone else. Except my income is generated overseas. According to your argument, if everyone in this country suddenly stopped shopping elsewhere and only did all their purchasing in New Zealand, all our financial problems would be solved. I know you are smarter than that.
And you know that I am not saying that all. Its a case that all the domino's are affected and each just care for the other or they all fall.
Overseas pensions that are not paid by MSD under reciprocal agreements are generally taxed at source or by tax credit arrangements. I am assuming that your pension is taxed at source as I cannot recall if there is a reciprocal agreement with the Netherlands.