[brnt]

There's Uber, but indeed, I am satisfied with public transport and have never used the likes of Uber.

It's not that I never tip at a restaurant (however, seldomly in NL), it's just that in the US you'll get bills with a percentage already 'included', and it 'is understood' that you must tip _something_, in a way (to me) very similar to bribes elsewhere.

[irrational]

Percentage included only happens for large parties (8 or more). Normally you don’t have to tip. It is entirely voluntary (though strongly encouraged since it is helping the poorest members of society). Think of it like a voluntary socialist tax to help the poor.