Windows 7 Update uninstalled Skype

On September 18, 2014, windows did an update, and I had not rebooted since then, until 2 hours ago. When I did, I found that Skype was uninstalled.

When checked system restore, it showed Skype set to be restored, if went and did the restore point created by that update.

What I'd like to know, is where the heck does Microsoft get the idea that they can dictate what software we run on our computers?

This is NOT the first time that a windows update has uninstalled another program, but it is the last straw that makes me write this.

Skype is my MAIN link to family members, some of which are in bad health, so to have MS go and have their update uninstall it, in my opinion, is down right intrusive. MS needs to stop trying to run a computer dictatorship, and let people have whatever programs they want on their computers.

I am unsure if I want to let the update go next time, as I have no idea what will get removed.

@NoelDP: 'Windows' did not - and almost could not - uninstall Skype without intervention from the user.

That couldn't be really true. I have the same problem like BurkeKnight. My skype dissapeared without my intervention, just as. Now I try to install the latest version of skype, but the error 1603 appears with a message like "wrong key" or so.
I don't know what to do, maybe I give Google+ hangouts a try.

@NoelDP: Thank you for your reply.
The first thing I've tried , was to repair or uninstall skype, but it was not listed any more.
Next, I deleted all traces of skype from the registry (and there are lots of), before I tried to install the newest version.
Unfortunately without success. In the next days I'll give your second advice a try.

@NoelDP: Yes, but I could not uninstall Skype, because it was not in the list and not even as a folder in C:\program files.
But I deleted some skype-folders in ProgramData and User\... but again with no effect except error 1603.

Ok, I've got it! It's not a Skype problem, because I've got the same errors when I installed an alternative video communications program. (there's something wrong with MSI)
I've uninstalled the Windows update KB2918614 and .. tadaaa ... the new installed Skype works like ever.
Maybe not the best solution, but the first who did it. An article about this error is found here:

Microsoft patch KB 2918614 triggers 'key not valid for use,' more errors | AfterDawn Discussion Forums

Thank you again, NoelDP, you brought me on the right path.