Let me give you one example why you should not muck around.
On your list you have "Visual C++ 2008".
You may say you have no idea what it is and you never use it, so you uninstall it.
But this is a piece of Microsoft code to allow OTHER programs to run.
If you uninstall it some other programs would stop working, but you may have no idea why. And even if you DID figure it was because you had uninstalled this "Visual C++ 2008" would you know where to find it to download it and install it again.
No, probably not, so leave everything alone.