Practical fact: Schiphol is built literally on top of one of the busiest train stations in the country.

Virtually all major cities have a direct rail connection to it, with frequencies from 2x / hour all the way up to 10x / hour. No direct connection? There's probably a one-transfer option running 4x / hour.

It's a five-minute walk from the train platform to the check-in desks. It is closer than the taxi stands or the parking shuttle. It is definitely cheaper than them as well. Level boarding is increasingly common, so there's a good chance you can just roll your luggage onto the train. The trains are generally clean and safe, homeless people and drug addicts on the train are incredibly rare.

If you visit The Netherlands, don't bother exploring other forms of transport until you are absolutely certain that rail transport is impossible. You'll just be wasting money and making things needlessly difficult for yourself.