As Amsterdam is my home airport, I can give you some feedback. Amsterdam is OK, they have spent lots of time and care on the signaling system, there are lots of tax free shops, enough seats to rest, friendly staff desks to help you out if you have to transfer etc.
But it has some drawbacks too:
Till 8 years ago, Schiphol was very compact; out of one center, 4 terminals radiated and you could walk for any change of planes within 10 minutes. But now they stretched some of the terminals and attached two new ones on either far side of the terminal. If you now have to get from one side of the airport to the other, it will take a tremendous time and effort; only roller bands which are quite slow and only on small sectors of the distance, while a people mover train might be more appropriate.
Another drawback is there are loud multilangual announcements about every leaving flight every minute, if you have to prepare office stuff or want to take a nap; impossible!
nobody has ever died from hard work, but why take the risk?