I would like to seek an answer to the following question but am not sure if my question will be considered as off topic:
I read that bond angles are almost always measured in degrees instead of radians. A scientist told me that in his research, they always measure the temperature in Celsius instead of Kelvin. In the scientist world there are some other units that are preferred over units from the International System of Units.
Now the question is, since there is a International System of Units, why should people, especially professionals, respect them?