Why are many languages case sensitive?

Question

Why are many languages case sensitive?

Is it simply a matter of inheritance? C++ is case-sensitive because C is, Java is case-sensitive because C++ is, etc.? Or is t

Answer 1

If word separation is not important then why do we put spaces between words? Therefore I think that underlines between words in a name do increase readability. Also lower case with Capitalization of appropriate characters is easiest to read. Lastly, it is surely much easier if all words can be conveyed by word of mouth - "Corporate Underscore Customer" rather than "Capital C Lower Case o r p o r a t e Underscore Capital C Lower Case u s t o m e r"! - the former can be spoken 'in one's head' the latter cannot - I wonder how people who are happy with case sensitivity handle these case sensitive names in their brains - I really struggle. So I feel that case sensitivity is not at all helpfull - a retrogade step from COBOL in my opinion.