I'm really puzzled by people with no stomach for subtitles or who would only watch stuff in their native language. Subtitles + original language of other cultures is so much better.
It's not tiring at all, either.
That said, subtitles can be very distracting. You end up focusing on the word and missing things in the scene/shot as well as the background.
Also the subtitles are not always faithful to the dialog. A good example of this is watching One Piece in English w/ Subs on Netflix. The spoken dialog will be one thing, the written will be another. I have some Japanese knowledge and can tell you that the subs(and the dubs) definitely do not reflect the feeling in some scenes.
It's just a matter of practice. And of watching on a big screen, I'd say.
Even then, just hearing the original language, even if you don't understand the words, conveys essential emotion. I like to hear the original voice actors, which are essential for the cartoon/anime (even more with live action movies, of course).
At the end of a long day of work and chores I cannot stomach a 90-120 minute film, regardless of what language it's in. I much prefer 30-60 minute content. At that length subtitles are much more digestible.
Ozu Bergman Fellini Suzuki Clouzot Bresson Kurosawa Mizoguchi Costa-Gavras Herzog Renoir and on and on
I especially loved the films of Jean Pierre Melville, Masaki Kobayashi and Anrei Tarkovsky. And yet, when I am done with a long day of work and chores, I cannot stomach anything with subtitles. Exhaustion plays a part in it. It just feels like work after a long day. And I wouldn't want to have that experience of any of the movies I loved back then, seeing them as a chore to be tolerated.