punctuation

I feel the comma is sorely underused. Why has it been abandoned? Is it too much to hit the comma button on the keyboard? Using the shift button is not required in doing so.
I went for a walk (comma) but found no candy.
OMG!

the sign (,), a mark of punctuation used for indicating a division in a sentence, as in setting off a word, phrase, or clause, esp. when such a division is accompanied by a slight pause or is to be noted in order to give order to the sequential elements of the sentence. It is also used to separate items in a list, to mark off thousands in numerals, to separate types or levels of information in bibliographic and other data, and, in Europe, as a decimal point.