> Every time I paid by cache on oil stations. Sometimes my car was half empty, sometimes it was almost full, but I expected long run. And every time amount I need to pay was completely unpredictable.

How is this any different than filling up a car in any other country?

Gas stations post their prices outside. You should get a feel for how many gallons are going into the tank when it’s half full or mostly full.

The pump shows the price in real time as you’re pumping. You can stop whenever you want. I’m having a hard time believing your story because it’s so clear what your price is by the second as you pump.

Also FYI: You could have walked into the gas station and asked the attendant for “$20 on pump #3” and then pump #3 would only dispense $20.00 of gas before stopping.

> I had very strong aftertaste that USA as part of the Western Civilization at this moment built on top of hidden slavery,

Gas stations charging by the gallon is slavery? What? I’m having a hard time believing this comment is real and not just some “America bad” thing. You can’t honestly equate paying for gas to slavery or act like paying by the gallon only happens in the United States.

> paying by the gallon only happens in the United States

It does. In other countries they pay by the liter and it's also much more expensive unless you're in the middle east.