Why is JavaScript case senstiive?

It really bothers me that javascript is so CaSe sensitive? Does it really matter if I say:
var divID

or

var DivID

???

Why should it make a difference? I know that they are technically different characters, but I feel that a programming language should be accomodating enough to allow you to mix and match, ESPECIALLY when I'm programming in ASP/VBScript and it allows me to do the same, while at the same time incorporate JavaScript into the code - yet my text editor still thinks we're in VB mode so it likes to capitalize the first letter of ever word.

Arrrrrghhh!