These are all either 'recommended' or 'optional' patches, if Microsoft put any of these in the 'Critical' catagory then they would be open to a lawsuit.
There are websites dedicated to informing the end users of the function of these patches with some very vague reasons to install them when you look up the Microsoft KB articles.
Some have even gone so far as to generate scripts to remove these patches.
As I have stated before, Redmond have adopted the Cupertino business model for their operating systems, the first clue was in removing 'patch Tuesday'.
Whichever way you look at it, we are being forced to install malware and spyware via updates and patches.
IMHO, this is creating an excellent opportunity for Linux distros to step in and dominate on Personal Computers.
No wonder PC sales are down over the last 6 months.