That is a fully incorrect statement. Just because objectively its better to live in US than Russia at this moment, does not mean that there is 0 good reasons to live in Russia. Stop thinking in extremes, every place has pros and cons, its just that some places have a lot more cons than pros.
Croatia here,
tap water is completely drinkable and safe without any boiling. Exception are some more remote islands, so if you are going on some island, chekc if the tap water is drinkable.
Fun fact: Croatia actually uses drinkable water for toilets as well, altough i would not drink from a toilet :)