I've never used the public healthcare, or school system anywhere in the world and intend to keep it that way, anything coming from the government I skip apart from giving me back my money in the form of a pension or something, I have a private insurance here for €2000/year which covers everything around the world for myself and my family.
Regarding the pension, yes, I'll get it in some years (if the whole system doesn't collapse in the meantime), and I won't reject them giving me back my money.
I'd heard about the healthcare being calculated on the entire salary, but so far, I only had to pay something like €3000/year for close to €200K annual income, so the total tax + social security still amounts to a very low number, can't complain! I'll let you know how much I pay this year.
Additionally, I also bought two apartments in my first year, and I am making renovations now to turn them into Airbnbs.
50% of the money spent on renovations is given back to you as government credits split by 10 years.
So, if you spend €100,000 in renovations, you get an additional €5000 yearly credit for a 10-year period that you can use for paying for taxes, social security, and other government-related expenses.
If you have an excess of credits, you can also sell them to someone else discounted (sell €1000 in government credits for €700 as an example, or for whatever you can sell them for).
This year I'm probably going to buy credits from a friend who offered to sell them to me at a 25% discount, furthering the savings.