Re: Why is this difficult?
If you routinely browse in multiple languages, then you're sufficiently unusual ...
Unusual? I don't think so.
If anything, I speak fewer languages than nearly every person around me; I am handicapped by growing up in a country large enough and chauvinistic enough to insist on not giving its children a meaningful second- and third- language education (or even casual foreign-language exposure) until you reach the university. As the result, I had to pick up my foreign languages as an adult - which unfortunately means that I will never entirely get rid of my accent, even when I am otherwise as proficient as a native speaker would be.
In almost every European country, it is completely normal and in fact expected that a moderately well-educated person will speak multiple languages. It is a uni-lingual person who is an aberration.