Drafters (the guys who draw engineering drawings) love it because you very rarely but just enough have to type lowercase letters (such as units, like 3mm) whils

Drafters (the guys who draw engineering drawings) love it because you very rarely but just enough have to type lowercase letters (such as units, like 3mm) whilst all other text must be in capitals. Thus, you just use shift to shift it to lowercase for those rare moments and no other times.