Language evolves, just like nobody says "Ye Olde Shoppe" anymore
You lot sound like a bunch of old Grandads, just accept (see I spelt it right this time) that language changes and that words like "innit" and "lol" have become a standard in the English language.
Or should we start ripping into how "AmericaniZed" (yes I used a Z to prove my point) our (yes OUR!) language has become, I actually heard a kid say "sidewalk" the other day!!