@wanfai You can run a half-full dishwasher, or simply rinse the early dishes a bit more than the later ones, or just not be home a lot and therefore not be particularly affected by the smell of the dishes waiting in the washer. It doesn't have to be perfectly "cost-effective" to be still easily worth your money for the time and patience it saved you. Oh, and since I got to live in a house built with a dishwasher in mind even as an impoverished student, so can most people.
...Is what I was about to post before I had second thoughts and googled it. Turns out about 75% of households in the US have dishwashers, and probably under 25% in Poland, both numbers being rough approximations. That's on top of the fact that plenty of people have dishwashers but don't use them, apparently. What the fuck? Washing dishes are the worst. People are weird.