The Word And

Everywhere on the Internet, everyone is typing wrong. Punctuation has gone out of the window. I've been on this planet fifty one years and no doubt others have too. Never in my life have I seen something so strange happen to our beloved English Language. Never has anything like this wound me up so much as this does.

Who thought of having a comma before the word and? I always had been taught and had it drummed into me from the time I could write a whole sentence, that the word and acts as a comma, no need to have a comma before using the word and. I don't know when it happened? I do not understand as to why it has happened? I can tell you now though, that I am pig sick of it.