As a Brazilian raised to not care about this stuff, I would say even rebelled a bit, it was weird to basically be required to do so once I reached adulthood. I remember getting in front of a sheriff and having to address him as "doutor". I remember talking to an intern in law firms and he corrected me when I addressed him by name saying, "No, it's DOUTOR Adriano".
Gee, let's not even mention the medical field... veterinarians and nutritionists want to be called "doutor"...