The best thing you could do for yourself if to read through this S4 forum and see all the problems that people are having with their phones after installing the 4.3 update. You are lucky it didn't install. After you read throught this forum then make a decision to update or not. My guess it will be not. As for the notifications I just been clicking them off by using the back button. Better off with a well working phone on 4.2.2 then a nightmare on 4.3.
Thanks for commenting. From what I have read, I agree, but there has got to be something Verizon can do to stop the updates from coming if we do not wish to use it. Let me know if anybody has figured this out.